The Spanish Empire (Spanish: Imperio Español; Latin: Imperium Hispanicum), historically known as the Hispanic Monarchy (Spanish: Monarquía Hispánica), the Catholic Monarchy (Spanish: Monarquía Católica)  or as the Universal Catholic Monarchy (Spanish: Monarquía Católica Universal)    was composed of kingdoms, vice-royalties, provinces and other territories ruled or administered by Spain and its predecessor states between 1492 and 1976.     One of the largest empires in history, Spain controlled a huge overseas territory from the late 15th century to the early 19th century in the Americas, the archipelago in the modern-day Philippines (which they called "The Indies" (Spanish: Las Indias)) and territories in Europe, Africa and Oceania.  It was one of the most powerful empires of the Early Modern Period.   The Spanish Empire became known as " the empire on which the sun never sets" and reached its maximum extent in the 18th century.   
Castile became the dominant kingdom in Iberia because of its jurisdiction over the overseas empire in the Americas and the Philippines.  The structure of empire was established under the Spanish Habsburgs (1516–1700), and under the Spanish Bourbon monarchs the empire was brought under greater crown control and increased its revenues from the Indies.   The crown's authority in The Indies was enlarged by the papal grant of powers of patronage, giving it power in the religious sphere.   An important element in the formation of Spain's empire was the dynastic union between Isabella I of Castile and Ferdinand II of Aragon, known as the Catholic Monarchs, which initiated political, religious and social cohesion but not political unification.  Iberian kingdoms retained their political identities, with particular administration and juridical configurations.
Although the power of the Spanish sovereign as monarch varied from one territory to another, the monarch acted as such in a unitary manner  over all the ruler's territories through a system of councils: the unity did not mean uniformity.  In 1580, when Philip II of Spain succeeded to the throne of Portugal (as Philip I), he established the Council of Portugal, which oversaw Portugal and its empire and "preserv[ed] its own laws, institutions, and monetary system, and united only in sharing a common sovereign."  The Iberian Union remained in place until in 1640, when Portugal re-established its independence under the House of Braganza. 
The Spanish empire in the Americas was formed after conquering indigenous empires and claiming large stretches of land, beginning with Christopher Columbus in the Caribbean Islands. In the early 16th century, it conquered and incorporated the Aztec and Inca empires, retaining indigenous elites loyal to the Spanish crown and converts to Christianity as intermediaries between their communities and royal government.   After a short period of delegation of authority by the crown in the Americas, the crown asserted control over those territories and established the Council of the Indies to oversee rule there.  The crown then established viceroyalties in the two main areas of settlement, Mexico and Peru, both regions of dense indigenous populations and mineral wealth. The Mayans were conquered in 1697. The Magellan-Elcano circumnavigation—the first circumnavigation of the Earth—laid the foundation for the Pacific Oceanic empire of Spain and began the Spanish colonization of the Philippines.
The structure of governance of its overseas empire was significantly reformed in the late 18th century by the Bourbon monarchs. Although the crown attempted to keep its empire a closed economic system under Habsburg rule, Spain was unable to supply the Indies with sufficient consumer goods to meet demand, so that foreign merchants from Genoa, France, England, Germany, and the Netherlands dominated the trade, with silver from the mines of Peru and Mexico flowing to other parts of Europe. The merchant guild of Seville (later Cadiz) served as middlemen in the trade. The crown's trade monopoly was broken early in the 17th century, with the crown colluding with the merchant guild for fiscal reasons in circumventing the supposedly closed system.  Spain was largely able to defend its territories in the Americas, with the Dutch, the English, and the French only taking small Caribbean islands and outposts, using them to engage in contraband trade with the Spanish populace in the Indies. In the 17th century, the diversion of silver revenue to pay for European consumer goods and the rising costs of defense of its empire meant that "tangible benefits of America to Spain were dwindling...at a moment when the costs of empire were climbing sharply."  The Bourbon monarchy attempted to expand trade within the empire, by allowing commerce between all ports in the empire, and took other measures to revive economic activity to the benefit of Spain. The Bourbons had inherited "an empire invaded by rivals, an economy shorn of manufactures, a crown deprived of revenue... [and tried to reverse the situation by] taxing colonists, tightening control, and fighting off foreigners. In the process, they gained a revenue and lost an empire." 
Spain experienced its greatest territorial losses during the early 19th century, when its colonies in the Americas began fighting for independence.  By the year 1900 Spain had also lost its colonies in the Caribbean and Pacific, and it was left with only its African possessions.
In Spanish America among the legacies of its relationship with Iberia, Spanish is the dominant language, Catholicism the main religion, and political traditions of representative government can be traced to the Spanish Constitution of 1812. In conjunction with the Portuguese Empire, the Spanish Empire's establishment in the 15th century ushered in the modern global era and the rise of European dominance in global affairs.
With the marriage of the heirs apparent to their respective thrones Ferdinand of Aragon and Isabella of Castile created a personal union that most scholars view as the foundation of the Spanish monarchy. The union of the Crowns of Castile and Aragon joined the economic and military power of Iberia under one dynasty, the House of Trastamara. Their dynastic alliance was important for a number of reasons, ruling jointly over a number of kingdoms and other territories, mostly in the eastern mediterranean region, under their respective legal and administrative status. They successfully pursued expansion in Iberia in the Christian conquest of the Muslim Kingdom of Granada, completed in 1492, for which Valencia-born Pope Alexander VI gave them the title of the Catholic Monarchs. Ferdinand of Aragon was particularly concerned with expansion in France and Italy, as well as conquests in North Africa. 
With the Ottoman Turks controlling the choke points of the overland trade from Asia and the Middle East, both Spain and Portugal sought alternative routes. The Kingdom of Portugal had an advantage over the Crown of Castile, having earlier retaken territory from the Muslims. Following Portugal's earlier completion of the reconquest and its establishment of settled boundaries, it began to seek overseas expansion, first to the port of Ceuta (1415) and then by colonizing the Atlantic islands of Madeira (1418) and the Azores (1427–1452); it also began voyages down the west coast of Africa in the fifteenth century.  Its rival Castile laid claim to the Canary Islands (1402) and retook territory from the Moors in 1462. The Christian rivals, Castile and Portugal, came to formal agreements over the division of new territories in the Treaty of Alcaçovas (1479), as well as securing the crown of Castile for Isabella, whose accession was challenged militarily by Portugal.
Following the voyage of Christopher Columbus in 1492 and first major settlement in the New World in 1493, Portugal and Castile divided the world by the Treaty of Tordesillas (1494), which gave Portugal Africa and Asia and the Western Hemisphere to Spain.  The voyage of Columbus, a Genoese mariner, obtained the support of Isabella of Castile, sailing west in 1492, seeking a route to the Indies. Columbus unexpectedly encountered the western hemisphere, populated by peoples he named "Indians". Subsequent voyages and full-scale settlements of Spaniards followed, with gold beginning to flow into Castile's coffers. Managing the expanding empire became an administrative issue. The reign of Ferdinand and Isabella began the professionalization of the apparatus of government in Spain, which led to a demand for men of letters (letrados) who were university graduates (licenciados), of Salamanca, Valladolid, Complutense and Alcalá. These lawyer-bureaucrats staffed the various councils of state, eventually including the Council of the Indies and Casa de Contratación, the two highest bodies in metropolitan Spain for the government of the empire in the New World, as well as royal government in The Indies.
During the last 250 years of the Reconquista era, the Castilian monarchy tolerated the small Moorish taifa client-kingdom of Granada in the south-east by exacting tributes of gold—the parias. In so doing, they ensured that gold from the Niger region of Africa entered Europe. 
When King Ferdinand and Queen Isabella I captured Granada in 1492, they implemented policies to maintain control of the territory.  To do so, the monarchy implemented a system of encomienda.  Encomienda was a method of land control and distribution based upon vassalic ties. Land would be granted to a noble family, who were then responsible for farming and defending it. This eventually led to a large land based aristocracy, a separate ruling class that the crown later tried to eliminate in its overseas colonies. By implementing this method of political organization, the crown was able to implement new forms of private property without completely replacing already existing systems, such as the communal use of resources. After the military and political conquest, there was an emphasis on religious conquest as well, leading to the creation of the Spanish Inquisition.  Although the Inquisition was technically a part of the Catholic church, Ferdinand and Isabella formed a separate Spanish Inquisition, which led to mass expulsion of Muslims and Jews from the peninsula. This religious court system was later adopted and transported to the Americas, though they took a less effective role there due to limited jurisdiction and large territories.
With the Christian reconquest completed in the Iberian peninsula, Spain began trying to take territory in Muslim North Africa. It had conquered Melilla in 1497, and further expansionism policy in North Africa was developed during the regency of Ferdinand the Catholic in Castile, stimulated by the Cardinal Cisneros. Several towns and outposts in the North African coast were conquered and occupied by Castile: Mazalquivir (1505), Peñón de Vélez de la Gomera (1508), Oran (1509), Algiers (1510), Bougie and Tripoli (1510). On the Atlantic coast, Spain took possession of the outpost of Santa Cruz de la Mar Pequeña (1476) with support from the Canary Islands, and it was retained until 1525 with the consent of the treaty of Cintra (1509).
The Catholic Monarchs had developed a strategy of marriages for their children to isolate their long-time enemy: France. The Spanish princesses married the heirs of Portugal, England and the House of Habsburg. Following the same strategy, the Catholic Monarchs decided to support the Aragonese house of Naples against Charles VIII of France in the Italian Wars beginning in 1494. Ferdinand's general Gonzalo Fernández de Córdoba took over Naples after defeating the French at the Battle of Cerignola and the Battle of Garigliano in 1503. In these battles, which established the supremacy of the Spanish Tercios in European battlefields, the forces of the kings of Spain acquired a reputation for invincibility that would last until the mid-17th century.
After the death of Queen Isabella in 1504, and her exclusion of Ferdinand from a further role in Castile, Ferdinand married Germaine de Foix in 1505, cementing an alliance with France. Had that couple had a surviving heir, likely the Crown of Aragon would have been split from Castile, which was inherited by Charles, Ferdinand and Isabella's grandson.  Ferdinand joined the League of Cambrai against Venice in 1508. In 1511, he became part of the Holy League against France, seeing a chance at taking both Milan—to which he held a dynastic claim—and Navarre. In 1516, France agreed to a truce that left Milan in its control and recognized Spanish control of Upper Navarre, which had effectively been a Spanish protectorate following a series of treaties in 1488, 1491, 1493, and 1495. 
Portugal obtained several Papal bulls that acknowledged Portuguese control over the discovered territories, but Castile also obtained from the Pope the safeguard of its rights to the Canary Islands with the bulls Romani Pontifex dated 6 November 1436 and Dominatur Dominus dated 30 April 1437.  The conquest of the Canary Islands, inhabited by Guanche people, began in 1402 during the reign of Henry III of Castile, by Norman nobleman Jean de Béthencourt under a feudal agreement with the crown. The conquest was completed with the campaigns of the armies of the Crown of Castile between 1478 and 1496, when the islands of Gran Canaria (1478–1483), La Palma (1492–1493), and Tenerife (1494–1496) were subjugated. 
The Portuguese tried in vain to keep secret their discovery of the Gold Coast (1471) in the Gulf of Guinea, but the news quickly caused a huge gold rush. Chronicler Pulgar wrote that the fame of the treasures of Guinea "spread around the ports of Andalusia in such way that everybody tried to go there".  Worthless trinkets, Moorish textiles, and above all, shells from the Canary and Cape Verde islands were exchanged for gold, slaves, ivory and Guinea pepper.
The War of the Castilian Succession (1475–79) provided the Catholic Monarchs with the opportunity not only to attack the main source of the Portuguese power, but also to take possession of this lucrative commerce. The Crown officially organized this trade with Guinea: every caravel had to secure a government license and to pay a tax on one-fifth of their profits (a receiver of the customs of Guinea was established in Seville in 1475—the ancestor of the future and famous Casa de Contratación). 
Castilian fleets fought in the Atlantic Ocean, temporarily occupying the Cape Verde islands (1476), conquering the city of Ceuta in the Tingitan Peninsula in 1476 (but retaken by the Portuguese), [c] [d] and even attacked the Azores islands, being defeated at Praia. [e] [f] The turning point of the war came in 1478, however, when a Castilian fleet sent by King Ferdinand to conquer Gran Canaria lost men and ships to the Portuguese who expelled the attack,  and a large Castilian armada—full of gold—was entirely captured in the decisive Battle of Guinea.  [g]
The Treaty of Alcáçovas (4 September 1479), while assuring the Castilian throne to the Catholic Monarchs, reflected the Castilian naval and colonial defeat:  "War with Castile broke out waged savagely in the Gulf [of Guinea] until the Castilian fleet of thirty-five sail was defeated there in 1478. As a result of this naval victory, at the Treaty of Alcáçovas in 1479 Castile, while retaining her rights in the Canaries, recognized the Portuguese monopoly of fishing and navigation along the whole west African coast and Portugal's rights over the Madeira, Azores and Cape Verde islands [plus the right to conquer the Kingdom of Fez ]."  The treaty delimited the spheres of influence of the two countries,  establishing the principle of the Mare clausum.  It was confirmed in 1481 by the Pope Sixtus IV, in the papal bull Æterni regis (dated on 21 June 1481). 
However, this experience would prove to be profitable for future Spanish overseas expansion, because as the Spaniards were excluded from the lands discovered or to be discovered from the Canaries southward —and consequently from the road to India around Africa —they sponsored the voyage of Columbus towards the west (1492) in search of Asia to trade in its spices, encountering the Americas instead.  Thus, the limitations imposed by the Alcáçovas treaty were overcome and a new and more balanced division of the world would be reached in the Treaty of Tordesillas between both emerging maritime powers. 
Seven months before the treaty of Alcaçovas, King John II of Aragon died, and his son Ferdinand II of Aragon, married to Isabella I of Castile, inherited the thrones of the Crown of Aragon. The two became known as the Catholic Monarchs, with their marriage a personal union that created a relationship between the Crown of Aragon and Castile, each with their own administrations, but ruled jointly by the two monarchs. 
Ferdinand and Isabella defeated the last Muslim king out of Granada in 1492 after a ten-year war. The Catholic Monarchs then negotiated with Christopher Columbus, a Genoese sailor attempting to reach Cipangu (Japan) by sailing west. Castile was already engaged in a race of exploration with Portugal to reach the Far East by sea when Columbus made his bold proposal to Isabella. In the Capitulations of Santa Fe, dated on 17 April 1492, Christopher Columbus obtained from the Catholic Monarchs his appointment as viceroy and governor in the lands already discovered  and that he might discover thenceforth;   thereby, it was the first document to establish an administrative organization in the Indies.  Columbus' discoveries inaugurated the Spanish colonization of the Americas. Spain's claim  to these lands was solidified by the Inter caetera papal bull dated 4 May 1493, and Dudum siquidem on 26 September 1493, which vested the sovereignty of the territories discovered and to be discovered.
Since the Portuguese wanted to keep the line of demarcation of Alcaçovas running east and west along a latitude south of Cape Bojador, a compromise was worked out and incorporated in the Treaty of Tordesillas, dated on 7 June 1494, in which the globe was split into two hemispheres dividing Spanish and Portuguese claims. These actions gave Spain exclusive rights to establish colonies in all of the New World from north to south (later with the exception of Brazil, which Portuguese commander Pedro Alvares Cabral encountered in 1500), as well as the easternmost parts of Asia. The treaty of Tordesillas was confirmed by Pope Julius II in the bull Ea quae pro bono pacis on 24 January 1506. 
The treaty of Tordesillas  and the treaty of Cintra (18 September 1509)  established the limits of the Kingdom of Fez for Portugal, and the Castilian expansion was allowed outside these limits, beginning with the conquest of Melilla in 1497. [h]
Unlike the crown of Portugal, Spain had not sought papal authorization for its explorations, but with Christopher Columbus's voyage in 1492, the crown sought papal confirmation of their title to the new lands.  Since the defense of Catholicism and propagation of the faith was the papacy's primary responsibility, there were a number of papal bulls promulgated that affected the powers of the crowns of Spain and Portugal in the religious sphere. Converting the inhabitants of in the newly discovered lands was entrusted by the papacy to the rulers of Portugal and Spain, through a series of papal actions. The Patronato real, or power of royal patronage for ecclesiastical positions had precedents in Iberia during the reconquest. In 1493 Pope Alexander, from the Iberian Kingdom of Valencia, issued a series of bulls. The papal bull of Inter caetera vested the government and jurisdiction of newly found lands in the kings of Castile and León and their successors. Eximiae devotionis sinceritas granted the Catholic monarchs and their successors the same rights that the papacy had granted Portugal, in particular the right of presentation of candidates for ecclesiastical positions in the newly discovered territories. 
According to the Concord of Segovia of 1475, Ferdinand was mentioned in the bulls as king of Castile, and upon his death the title of the Indies was to be incorporated into the Crown of Castile.  The territories were incorporated by the Catholic Monarchs as jointly held assets. 
In the Treaty of Villafáfila of 1506, Ferdinand renounced not only the government of Castile in favor of his son-in-law Philip I of Castile but also the lordship of the Indies, withholding a half of the income of the kingdoms of the Indies.  Joanna of Castile and Philip immediately added to their titles the kingdoms of Indies, Islands and Mainland of the Ocean Sea. But the Treaty of Villafáfila did not hold for long because of the death of Philip; Ferdinand returned as regent of Castile and as "lord the Indies". 
According to the domain granted by Papal bulls and the wills of queen Isabella of Castile in 1504 and king Ferdinand of Aragon in 1516, such property became held by the Crown of Castile. This arrangement was ratified by successive monarchs, beginning with Charles I in 1519  in a decree that spelled out the juridical status of the new overseas territories. 
The lordship of the discovered territories conveyed by papal bulls was private to the kings of Castile and León. The political condition of the Indies were to transform from "Lordship" of the Catholic Monarchs to "Kingdoms" for the heirs of Castile. Although the Alexandrine Bulls gave full, free and omnipotent power to the Catholic Monarchs,  they did not rule them as a private property but as a public property through the public bodies and authorities from Castile,  and when those territories were incorporated into the Crown of Castile the royal power was subject to the laws of Castile. 
The crown was the guardian of levies for the support of the Catholic Church, in particular the tithe, which was levied on the products of agriculture and ranching. In general, Indians were exempt from the tithe. Although the crown received these revenues, they were to be used for the direct support of the ecclesiastical hierarchy and pious establishments, so that the crown itself did not benefit financially from this income. The crown's obligation to support the Church sometimes resulted in funds from the royal treasury being transferred to the Church when the tithes fell short of paying ecclesiastical expenses. 
In New Spain, the Franciscan Bishop of Mexico Juan de Zumárraga and the first viceroy Don Antonio de Mendoza established an institution in 1536 to train natives for ordination to the priesthood, the Colegio de Santa Cruz de Tlatelolco. The experiment was deemed a failure, with the natives considered too new in the faith to be ordained. Pope Paul III did issue a bull, Sublimis Deus (1537), declaring that natives were capable of becoming Christians, but Mexican (1555) and Peruvian (1567–68) provincial councils banned natives from ordination. 
With the Capitulations of Santa Fe, the Crown of Castile granted expansive power to Christopher Columbus, including exploration, settlement, political power, and revenues, with sovereignty reserved to the Crown. The first voyage established sovereignty for the crown, and the crown acted on the assumption that Columbus's grandiose assessment of what he found was true, so Spain negotiated the Treaty of Tordesillas with Portugal to protect their territory on the Spanish side of the line. The crown fairly quickly reassessed its relationship with Columbus and moved to assert more direct crown control over the territory and extinguish his privileges. With that lesson learned, the crown was far more prudent in the specifying the terms of exploration, conquest, and settlement in new areas.
The pattern in the Caribbean that played out over the larger Spanish Indies was exploration of an unknown area and claim of sovereignty for the crown; conquest of indigenous peoples or assumption of control without direct violence; settlement by Spaniards who were awarded the labour of indigenous people via the encomienda; and the existing settlements becoming the launch point for further exploration, conquest, and settlement, followed by the establishment institutions with officials appointed by the crown. The patterns set in the Caribbean were replicated throughout the expanding Spanish sphere, so although the importance of the Caribbean quickly faded after the Spanish conquest of the Aztec Empire and the Spanish conquest of the Inca Empire, many of those participating in those conquests had started their exploits in the Caribbean. 
The first permanent European settlements in the New World were established in the Caribbean, initially on the island of Hispaniola, later Cuba, Jamaica and Puerto Rico. As a Genoese with the connections to Portugal, Columbus considered settlement to be on the pattern of trading forts and factories, with salaried employees to trade with locals and to identify exploitable resources.  However, Spanish settlement in the New World was based on a pattern of a large, permanent settlements with the entire complex of institutions and material life to replicate Castilian life in a different venue. Columbus's second voyage in 1493 had a large contingent of settlers and goods to accomplish that.  On Hispaniola, the city of Santo Domingo was founded in 1496 by Christopher Columbus's brother Bartholomew Columbus and became a stone-built, permanent city.
In 1508, the crown's attention shifted from Hispaniola to Cuba, where a major expedition was launched in 1511 under the leadership of Diego Velázquez de Cuéllar. The invading Castilians slaughtered thousands of Taíno Indians. By 1515, the conquest of Cuba was complete.
Although Columbus staunchly asserted and believed that the lands he encountered were in Asia, the paucity of material wealth and the relative lack of complexity of indigenous society meant that the Crown of Castile initially was not concerned with the extensive powers granted Columbus. As the Caribbean became a draw for Spanish settlement and as Columbus and his extended Genoese family failed to be recognized as officials worthy of the titles they held, there was unrest among Spanish settlers. The crown began to curtail the expansive powers that they had granted Columbus, first by appointment of royal governors and then a high court or Audiencia in 1511.
Columbus encountered the mainland in 1498,  and the Catholic Monarchs learned of his discovery in May 1499. Taking advantage of a revolt against Columbus in Hispaniola, they appointed Francisco de Bobadilla as governor of the Indies with civil and criminal jurisdiction over the lands discovered by Columbus. Bobadilla, however, was soon replaced by Frey Nicolás de Ovando in September 1501.  Henceforth, the Crown would authorize to individuals voyages to discover territories in the Indies only with previous royal license,  and after 1503 the monopoly of the Crown was assured by the establishment of the Casa de Contratación (House of Trade) at Seville. The successors of Columbus, however, litigated against the Crown until 1536  for the fulfillment of the Capitulations of Santa Fe in the pleitos colombinos.
In metropolitan Spain, the direction of the Americas was taken over by the Bishop Fonseca  between 1493 and 1516,  and again between 1518 and 1524, after a brief period of rule by Jean le Sauvage.  After 1504 the figure of the secretary was added, so between 1504 and 1507 Gaspar de Gricio took charge,  between 1508 and 1518 Lope de Conchillos followed him,  and from 1519, Francisco de los Cobos. 
In 1511, the Junta of The Indies was constituted as a standing committee belonging to the Council of Castile to address issues of the Indies,  and this junta constituted the origin of the Council of the Indies, established in 1524.  That same year, the crown established a permanent high court, or audiencia, in the most important city at the time, Santo Domingo, on the island of Hispaniola (now Haiti and the Dominican Republic). Now oversight of the Indies was based both in Castile and with officials of the new royal court in the colony. As new areas were conquered and significant Spanish settlements were established, likewise other audiencias were established.[ citation needed]
Following the settlement of Hispaniola, Europeans began searching elsewhere to begin new settlements, since there was little apparent wealth and the numbers of indigenous were declining. Those from the less prosperous Hispaniola were eager to search for new success in a new settlement. From there Juan Ponce de León conquered Puerto Rico (1508) and Diego Velázquez took Cuba.
In 1508, the Board of Navigators met in Burgos and concurred on the need to establish settlements on the mainland, a project entrusted to Alonso de Ojeda and Diego de Nicuesa as governors. They were subordinated to the governor of Hispaniola,  the newly appointed Diego Columbus,  with the same legal authority as Ovando. 
The first settlement on the mainland was Santa María la Antigua del Darién in Castilla de Oro (now Nicaragua, Costa Rica, Panama and Colombia), settled by Vasco Núñez de Balboa in 1510. In 1513, Balboa crossed the Isthmus of Panama, and led the first European expedition to see the Pacific Ocean from the West coast of the New World. In an action with enduring historical import, Balboa claimed the Pacific Ocean and all the lands adjoining it for the Spanish Crown. 
The judgment of Seville of May 1511 recognized the viceregal title to Diego Columbus, but limited it to Hispaniola and to the islands discovered by his father, Christopher Columbus;  his power was nevertheless limited by royal officers and magistrates  constituting a dual regime of government.  The crown separated the territories of the mainland, designated as Castilla de Oro,  from the viceroy of Hispaniola, establishing Pedrarias Dávila as General Lieutenant in 1513  with functions similar to those of a viceroy, while Balboa remained but was subordinated as governor of Panama and Coiba on the Pacific Coast;  after his death, they returned to Castilla de Oro. The territory of Castilla de Oro did not include Veragua (which was comprised approximately between the Chagres River and cape Gracias a Dios ), as it was subject to a lawsuit between the Crown and Diego Columbus, or the region farther north, towards the Yucatán peninsula, explored by Yáñez Pinzón and Solís in 1508–1509, due to its remoteness.  The conflicts of the viceroy Columbus with the royal officers and with the Audiencia, created in Santo Domingo in 1511,  caused his return to the Peninsula in 1515.
During the 1500s, the Spanish began to explore and colonize North America. They were looking for gold in native kingdoms. By 1511 there were rumours of undiscovered lands to the northwest of Hispaniola. Juan Ponce de León equipped three ships with at least 200 men at his own expense and set out from Puerto Rico on 4 March 1513 to Florida and surrounding coastal area. Another early motive was the search for the Seven Cities of Gold, or "Cibola", rumoured to have been built by Native Americans somewhere in the desert Southwest. In 1536 Francisco de Ulloa, the first documented European to reach the Colorado River, sailed up the Gulf of California and a short distance into the river's delta.
In the year 1524 the Portuguese Estevão Gomes, who'd sailed in Ferdinand Magellan's fleet, explored Nova Scotia, sailing South through Maine, where he entered New York Harbor, the Hudson River and eventually reached Florida in August 1525.
The Spaniard Álvar Núñez Cabeza de Vaca was the leader of the Narváez expedition of 600 men, that between 1527–35 explored the mainland of North America. From Tampa Bay, Florida on 15 April 1528, they marched through Florida. Traveling mostly on foot, they crossed Texas, New Mexico and Arizona, and Mexican states of Tamaulipas, Nuevo León and Coahuila. After several months of fighting native inhabitants through wilderness and swamp, the party reached Apalachee Bay with 242 men. They believed they were near other Spaniards in Mexico, but there was in fact 1500 miles of coast between them. They followed the coast westward, until they reached the mouth of the Mississippi River near to Galveston Island. Later they were enslaved for a few years by various Native American tribes of the upper Gulf Coast. They continued through Coahuila and Nueva Vizcaya; then down the Gulf of California coast to what is now Sinaloa, Mexico, over a period of roughly eight years. They spent years enslaved by the Ananarivo of the Louisiana Gulf Islands. Later they were enslaved by the Hans, the Capoques and others. In 1534 they escaped into the American interior, contacting other Native American tribes along the way. Only four men, Cabeza de Vaca, Andrés Dorantes de Carranza, Alonso del Castillo Maldonado, and an enslaved Moroccan Berber named Estevanico, survived and escaped to reach Mexico City. In 1539, Estevanico was one of four men who accompanied Marcos de Niza as a guide in search of the fabled Seven Cities of Cibola, preceding Coronado. When the others were struck ill, Estevanico continued alone, opening up what is now New Mexico and Arizona. He was killed at the Zuni village of Hawikuh in present-day New Mexico.
The viceroy of New Spain Antonio de Mendoza, for who is named the Codex Mendoza, commissioned several expeditions to explore and establish settlements in the northern lands of New Spain in 1540–42. Francisco Vásquez de Coronado reached Quivira in central Kansas. Juan Rodríguez Cabrillo explored the western coastline of Alta California in 1542–43.
Francisco Vásquez de Coronado's 1540–42 expedition began as a search for the fabled Cities of Gold, but after learning from natives in New Mexico of a large river to the west, he sent García López de Cárdenas to lead a small contingent to find it. With the guidance of Hopi Indians, Cárdenas and his men became the first outsiders to see the Grand Canyon. However, Cárdenas was reportedly unimpressed with the canyon, assuming the width of the Colorado River at six feet (1.8 m) and estimating 300-foot (91 m)-tall rock formations to be the size of a man. After unsuccessfully attempting to descend to the river, they left the area, defeated by the difficult terrain and torrid weather.
In 1540, Hernando de Alarcón and his fleet reached the mouth of the Colorado River, intending to provide additional supplies to Coronado's expedition. Alarcón may have sailed the Colorado as far upstream as the present-day California–Arizona border. However, Coronado never reached the Gulf of California, and Alarcón eventually gave up and left. Melchior Díaz reached the delta in the same year, intending to establish contact with Alarcón, but the latter was already gone by the time of Díaz's arrival. Díaz named the Colorado River Rio del Tizon, while the name Colorado ("Red River") was first applied to a tributary of the Gila River.
In 1540, expeditions under Hernando de Alarcon and Melchior Diaz visited the area of Yuma and immediately saw the natural crossing of the Colorado River from Mexico to California by land, as an ideal spot for a city, as the Colorado River narrows to slightly under 1000 feet wide in one small point. Later military expedition that crossed the Colorado River at the Yuma Crossing include Juan Bautista de Anza (1774).
In 1541, Hernando De Soto became the first explorer to cross the Mississippi River.
The Chamuscado and Rodríguez Expedition explored New Mexico in 1581–82. They explored a part of the route visited by Coronado in New Mexico and other parts in the southwestern United States between 1540 and 1542.
As a result of the marriage politics of the Catholic Monarchs (in Spanish, Reyes Católicos), their Habsburg grandson Charles inherited the Castilian empire in America and the possessions of the Crown of Aragon in the Mediterranean (including all of south Italy), lands in Germany, the Low Countries, Franche-Comté, and Austria. The latter and the rest of the hereditary Habsburg domains were transferred to Ferdinand, the Emperor's brother, whereas Spain and the remaining possesions were inherited by Charles's son, Philip II of Spain, at the abdication of the former in 1556.
The Habsburgs pursued several goals:
- Undermining the power of France and containing it in its eastern borders
- Defending Europe against Islam, notably the Ottoman Empire in the Ottoman–Habsburg wars
- Maintaining Habsburg hegemony in the Holy Roman Empire and defending the Roman Catholic Church against the Protestant Reformation
- Spreading (Catholic) Christianity to the unconverted indigenous of the New World and the Philippines
- Exploiting the resources of the Americas (gold, silver, sugar) and trading with Asia ( porcelain, spices, silk)
- Excluding other European powers from the possessions it claimed in the New World
"I learnt a proverb here", said a French traveler in 1603: "Everything is dear in Spain except silver".  The problems caused by inflation were discussed by scholars at the School of Salamanca and the arbitristas. The natural resource abundance provoked a decline in entrepreneurship as profits from resource extraction are less risky.  The wealthy preferred to invest their fortunes in public debt (juros). The Habsburg dynasty spent the Castilian and American riches in wars across Europe on behalf of Habsburg interests, and declared moratoriums (bankruptcies) on their debt payments several times. These burdens led to a number of revolts across the Spanish Habsburg's domains, including their Spanish kingdoms, but the rebellions were put down.
With the death of Ferdinand II of Aragon, and the supposed incompetence to rule of his daughter, Queen Juana of Castile and Aragon, Charles of Ghent became Charles I of Castile and Aragon. He was the first Habsburg monarch of Spain and co-ruler of Spain with his mother, Queen Juana. Charles had been raised in Mechelen and his interests remained those of Christian Europe. While not directly an inheritance, Charles was elected emperor of the Holy Roman Empire after the death of his grandfather Emperor Maximilian. In 1530, he was crowned Holy Roman Emperor by Pope Clement VII in Bologna, the last emperor to receive a papal coronation. His reign was dominated by war and three specific conflicts: the Italian Wars with France, [i] the Ottoman-Habsburg Wars with the Ottoman Turks, [j] and the Protestant Reformation. [k]
The overseas lands claimed by Spain in the New World proved to be a source of wealth and the crown was able to assert greater control over its overseas possessions in the political and religious spheres than was possible on Iberian peninsula or in Europe. The conquests of the Aztec Empire and the Inca Empire brought vast indigenous civilizations into the Spanish Empire and the mineral wealth, particularly silver, were identified and exploited, becoming the economic lifeblood of the crown. Under Charles, Spain and its overseas empire in the Americas became deeply entwined, with the crown enforcing Catholic exclusivity; exercising crown primacy in political rule, unencumbered by claims of an existing aristocracy; and defending its claims against other European powers.  In 1556 he abdicated his throne of Spain to his son, Philip, leaving the ongoing conflicts to his heir.
When Charles succeeded to the throne of Spain, Spain's overseas possessions in the New World were based in the Caribbean and the Spanish Main and consisted of a rapidly decreasing indigenous population, few resources of value to the crown, and a sparse Spanish settler population. The situation changed dramatically with the expedition of Hernán Cortés, who, with alliances with city-states hostile to the Aztecs and thousands of indigenous Mexican warriors, conquered the Aztec Empire in 1521. Following the pattern established in Spain during the Reconquista and in the Caribbean, the first European settlements in the Americas, conquerors divided up the indigenous population in private holdings encomiendas and exploited their labor. Central Mexico and later the Inca Empire of Peru gave Spain vast new indigenous populations to convert to Christianity and rule as vassals of the crown. Charles established the Council of the Indies in 1524 to oversee all of Castile's overseas possessions. Charles appointed a viceroy in Mexico in 1535, capping the royal governance of the high court, Real Audiencia, and treasury officials with the highest royal official. Following the conquest of Peru, in 1542 Charles likewise appointed a viceroy. Both officials were under the jurisdiction of the Council of the Indies. Charles promulgated the New Laws of 1542 to limit the power of the conqueror group to form a hereditary aristocracy that might challenge the power of the crown.
The reign of Philip II of Spain was extremely important, with both major successes and failures. Philip was born in Valladolid on 21 May 1527, and was the only legitimate son of Holy Roman Emperor Charles V, by his wife Isabella of Portugal. He did not become Holy Roman Emperor, but divided Habsburg possessions with his uncle Ferdinand. Philip treated Castile as the foundation of his empire, but the population of Castile was never great enough to provide the soldiers needed to defend the Empire or settlers to populate it. His father married him to Queen Mary I of England in 1554 to form an alliance with the English, and both Philip and Mary were Catholics, making them unpopular with the Church of England and the Protestant majority of England. He seized the throne of Portugal in 1580, creating the Iberian Union and bringing the entire Iberian peninsula under his personal rule.
Philip was unable to suppress the Dutch Revolt, which was aided by English and French rivals. His militant Catholicism also played a major role in his actions, as did his inability to understand imperial finances. He inherited his father's debts and incurred his own pursuing religious wars, resulting in recurring state bankruptcies and dependence on Genoese and German bankers. 
The first years of his reign, "from 1556 to 1566, Philip II was concerned principally with Muslim allies of the Turks, based in Tripoli and Algiers, the bases from which North African [Muslim] forces under the corsair Dragut preyed upon Christian shipping." 
In 1560, a Spanish-led Christian fleet was sent to recapture Tripoli, but the fleet was destroyed by the Ottomans at the Battle of Djerba. In 1565, the Ottomans sent a large expedition to Malta, which laid siege to several forts on the island. A Spanish relief force from Sicily drove the Ottomans (exhausted from a long siege) away from the island. The death of Suleiman the Magnificent the following year and his succession by his less capable son Selim the Sot emboldened Philip, who resolved to carry the war to the sultan himself. In 1571, a Christian fleet, led by Charles's natural son John of Austria, annihilated the Ottoman fleet at the Battle of Lepanto in the eastern Mediterranean. [l] John captured Tunis from the Ottomans in 1573, but it was soon lost again. The Ottoman sultan agreed to a truce in the Mediterranean with Philip in 1580.  In the western Mediterranean, Philip pursued a defensive policy with the construction of a series of armed garrisons and peace agreements with some of the Muslim rulers of North Africa. 
In the first half of the 17th century, Spanish ships attacked the Anatolian coast, defeating larger Ottoman fleets at the Battle of Cape Celidonia and the Battle of Cape Corvo. Larache and La Mamora, on the Moroccan Atlantic coast, and the island of Alhucemas, in the Mediterranean, were taken, but during the second half of the 17th century, Larache and La Mamora were also lost.
Philip led Spain into the final phase of the Italian Wars, crushing a French army at the Battle of St. Quentin in Picardy in 1558 and defeating the French again at the Battle of Gravelines. The Peace of Cateau-Cambrésis, signed in 1559, permanently recognized Spanish claims in Italy. France was stricken for the next thirty years by chronic civil war and unrest and, during this period, removed it from effectively competing with Spain and the Habsburg family in European power games. Freed from effective French opposition, Spain attained the apogee of its might and territorial reach in the period 1559–1643.
In 1566, Calvinist-led riots in the Netherlands prompted the Duke of Alba to march into Brussels at the head of a large army to restore order. In 1568, William of Orange, a German nobleman, led a failed attempt to drive Alba from the Netherlands. The Battle of Rheindalen is often seen as the unofficial start of the Eighty Years' War that led to the separation of the northern and southern Netherlands and to the formation of the United Provinces. The Spanish, who derived a great deal of wealth from the Netherlands and particularly from the vital port of Antwerp, were committed to restoring order and maintaining their hold on the provinces. [m] During the initial phase of the war, the revolt was largely unsuccessful. Spain regained control over most of the rebelling provinces. This period is known as the " Spanish Fury" due to the high number of massacres, instances of mass looting, and total destruction of multiple cities between 1572 and 1579.
In January 1579, Friesland, Gelderland, Groningen, Holland, Overijssel, Utrecht and Zeeland formed the United Provinces which became the Dutch Netherlands of today. Meanwhile, Spain sent Alessandro Farnese with 20,000 well-trained troops into the Netherlands. Groningen, Breda, Campen, Dunkirk, Antwerp, and Brussels, among others, were put to siege. Farnese eventually secured the Southern provinces for Spain. After the Spanish capture of Maastricht in 1579, the Dutch began to turn on William of Orange.  William was assassinated by a supporter of Philip in 1584.
After the fall of Antwerp, the Queen of England began to aid the Northern provinces and sent troops there in 1585. English forces under the Earl of Leicester and then Lord Willoughby faced the Spanish in the Netherlands under Farnese in a series of largely indecisive actions that tied down significant numbers of Spanish troops and bought time for the Dutch to reorganize their defenses.  The Spanish Armada suffered defeat at the hands of the English in 1588 and the situation in the Netherlands became increasingly difficult to manage. Maurice of Nassau, William's son, recaptured Deventer, Groningen, Nijmegen and Zutphen. The Spanish were on the defensive, mainly because they had wasted too much resources on the attempted invasion of England and on expeditions in northern France. In 1595, King Henry IV of France declared war on Spain, further reducing Spain's ability to launch offensive warfare on the United Provinces. Philip had been forced to declare bankruptcy in 1557, 1560, 1576, and 1596.  However, by regaining control of the sea, Spain was able to greatly increase the supply of gold and silver from America, which allowed it to increase military pressure on England and France.
Under Philip II, royal power over the Indies increased, but the crown knew little about its overseas possessions in the Indies. Although the Council of the Indies was tasked with oversight there, it acted without advice of high officials with direct colonial experience. Another serious problem was that the crown did not know what Spanish laws were in force there. To remedy the situation, Philip appointed Juan de Ovando, who was named President of the council, to give advice. Ovando appointed a "chronicler and cosmographer of the Indies", Juan López de Velasco, to gather information about the crown's holdings, which resulted in the Relaciones geográficas in the 1580s. 
The crown sought greater control over encomenderos, who had attempted to establish themselves as a local aristocracy; strengthened the power of the ecclesiastical hierarchy; shored up religious orthodoxy by the establishment of the Inquisition in Lima and Mexico City (1571); and increased revenues from silver mines in Peru and in Mexico, discovered in the 1540s. Particularly important was the crown's appointment of two able viceroys, Don Francisco de Toledo as viceroy of Peru (r. 1569–1581), and in Mexico, Don Martín Enríquez (r. 1568–1580), who was subsequently appointed viceroy to replace Toledo in Peru. In Peru, after decades of political unrest, with ineffective viceroys and encomenderos wielding undue power, weak royal institutions, a renegade Inca state existing in Vilcabamba, and waning revenue from the silver mine of Potosí, Toledo's appointment was a major step forward for royal control. He built on reforms attempted under earlier viceroys, but he is often credited with a major transformation in crown rule in Peru. Toledo formalized the labor draft of Andean commoners, the mita, to guarantee a labor supply for both the silver mine at Potosí and the mercury mine at Huancavelica. He established administrative districts of corregimiento, and resettled native Andeans in reducciones to better rule them. Under Toledo, the last stronghold of the Inca state was destroyed and the last Inca emperor, Tupac Amaru I, was executed. Silver from Potosí flowed to coffers in Spain and paid for Spain's wars in Europe.  In Mexico, Viceroy Enríquez organized the defense of the northern frontier against nomadic and bellicose indigenous groups, who attacked the transport lines of silver from the northern mines.  In the religious sphere, the crown sought to bring the power of the religious orders under control with the Ordenanza del Patronazgo, ordering friars to give up their Indian parishes and turn them over to the diocesan clergy, who were more closely controlled by the crown.
The crown expanded its global claims and defended existing ones in the Indies. Transpacific explorations had resulted in Spain claiming the Philippines and the establishment of Spanish settlements and trade with Mexico. The viceroyalty of Mexico was given jurisdiction over the Philippines, which became the entrepôt for Asian trade. Philip's succession to the crown of Portugal in 1580 complicated the situation on the ground in the Indies between Spanish and Portuguese settlers, although Brazil and Spanish America were administered through separate councils in Spain. Spain dealt with English encroachment on Spain's maritime control in the Indies, particularly by Sir Francis Drake and his cousin John Hawkins. In 1568, the Spanish defeated Hawkins' fleet at the Battle of San Juan de Ulúa in present-day Mexico. In 1585, Drake sailed for the West Indies and sacked Santo Domingo, captured Cartagena de Indias, and St. Augustine in Florida. Both Drake and Hawkins died of disease during the disastrous 1595–96 expedition against Puerto Rico ( Battle of San Juan), Panama, and other targets in the Spanish Main, a severe setback in which the English suffered heavy losses in soldiers and ships.
With the conquest and settlement of the Philippines, the Spanish Empire reached its greatest extent.  In 1564, Miguel López de Legazpi was commissioned by the viceroy of New Spain (Mexico), Don Luís de Velasco, to lead an expedition in the Pacific Ocean to find the Spice Islands, where earlier explorers Ferdinand Magellan and Ruy López de Villalobos had landed in 1521 and 1543, respectively. The westward sailing to reach the sources of spices continued to be a necessity with the Ottomans still controlled major choke points in central Asia. It was unclear how the agreement between Spain and Portugal dividing the Atlantic world affected finds on the other side of the Pacific. Spain had ceded its rights to the "Spice Islands" to Portugal in the Treaty of Saragossa in 1529, but the appellation was vague as was their exact delineation. The Legazpi expedition was ordered by King Philip II, after whom the Philippines had earlier been named by Ruy López de Villalobos, when Philip was heir to the throne. The king stated that "the main purpose of this expedition is to establish the return route from the western isles, since it is already known that the route to them is fairly short."  The viceroy died in July 1564, but the Audiencia and López de Legazpi completed the preparations for the expedition. On embarking on the expedition, Spain lacked maps or information to guide the king's decision to authorize the expedition. That realization subsequently led to the creation of reports from the various regions of the empire, the relaciones geográficas.  The Philippines came under the jurisdiction of the viceroyalty of Mexico, and once the Manila Galleon sailings between Manila and Acapulco were established, Mexico became the Philippines' link to the larger Spanish Empire.
Spanish colonization began in earnest when López de Legazpi arrived from Mexico in 1565 and formed the first settlements in Cebu. Beginning with just five ships and five hundred men accompanied by Augustinian friars, and further strengthened in 1567 by two hundred soldiers, he was able to repel the Portuguese and create the foundations for the colonization of the archipelago. In 1571, the Spanish, their Mexican recruits and their Filipino (Visayan) allies attacked and occupied Maynila, a vassal-state of the Sultanate of Brunei, and negotiated the incorporation of the Kingdom of Tondo which was liberated from the Bruneian Sultanate's control and of whom, their princess, Gandarapa, had a tragic romance with the Mexican-born Conquistador and grandson of Miguel Lopez de Legazpi, Juan de Salcedo. The combined Spanish-Mexican-Filipino forces also built a Christian walled city over the burnt ruins of Muslim Maynila and made it as the new capital of the Spanish East Indies and renamed it Manila.  Spaniards were few and life was difficult and they were often outnumbered by their Latino recruits and Filipino allies. They attempted to mobilize subordinated populations through the encomienda. Unlike in the Caribbean where the indigenous populations rapidly disappeared, the indigenous populations continued to be robust in the Philippines.  One Spaniard described the climate as "cuatro meses de polvo, cuatro meses de lodo, y cuatro meses de todo" (four months of dust, four months of mud, and four months of everything). 
Legazpi built a fort in Manila and made overtures of friendship to Lakan Dula, Lakan of Tondo, who accepted. Maynila's former ruler, the Muslim rajah, Rajah Sulayman, who was a vassal to the Sultan of Brunei, refused to submit to Legazpi but failed to get the support of Lakan Dula or of the Pampangan and Pangasinan settlements to the north. When Tarik Sulayman and a force of Kapampangan and Tagalog Muslim warriors attacked the Spaniards in the Battle of Bangkusay, he was finally defeated and killed. The Spanish also repelled an attack by Chinese pirate warlord Limahong. Simultaneously, the establishment of a Christianized Philippines attracted Chinese traders who exchanged their silk for Mexican silver, Indian and Malay traders also settled in the Philippines too, to trade their spices and gems for the same Mexican silver. The Philippines then became a center for Christian missionary activity that was also directed to Japan and the Philippines even accepted Christian converts from Japan after the Shogun persecuted them. Most of the soldiers and settlers sent by the Spanish to the Philippines were either from Mexico or Peru and very little people directly came from Spain. At one point, the royal officials in Manila complained that most of the soldiers who were being sent from New Spain were black, mulatto or Native American, with almost no Spaniards among the contingents. 
In 1578, the Castilian War erupted between the Christian Spaniards and Muslim Bruneians over control of the Philippine archipelago. The Spanish were joined by the newly Christianized Non-Muslim Visayans of the Kedatuan of Madja-as who were Animists and Rajahnate of Cebu who were Hindus, plus the Rajahnate of Butuan (who were from northern Mindanao and were Hindus with a Buddhist Monarchy), as well as the remnants of the Kedatuan of Dapitan who are also Animists and had previously waged war against the Islamic nations of the Sultanate of Sulu and Kingdom of Maynila. They fought against the Sultanate of Brunei and its allies, the Bruneian puppet-states of Maynila and Sulu, which had dynastic links with Brunei. The Spanish, its Mexican recruits and Filipino allies assaulted Brunei and seized its capital, Kota Batu. This was achieved partly as a result of the assistance of two noblemen, Pengiran Seri Lela and Pengiran Seri Ratna. The former had traveled to Manila to offer Brunei as a tributary of Spain for help to recover the throne usurped by his brother, Saiful Rijal.  The Spanish agreed that if they succeeded in conquering Brunei, Pengiran Seri Lela would indeed become the Sultan, while Pengiran Seri Ratna would be the new Bendahara. In March 1578, the Spanish fleet, led by De Sande himself, acting as Capitán General, started its journey towards Brunei. The expedition consisted of 400 Spaniards and Mexicans, 1,500 Filipino natives and 300 Borneans.  The campaign was one of many, which also included action in Mindanao and Sulu.  
The Spanish succeeded in invading the capital on 16 April 1578, with the help of Pengiran Seri Lela and Pengiran Seri Ratna. Sultan Saiful Rijal and Paduka Seri Begawan Sultan Abdul Kahar were forced to flee to Meragang then to Jerudong. In Jerudong, they made plans to chase the conquering army away from Brunei. The Spanish suffered heavy losses due to a cholera or dysentery outbreak.  They were so weakened by the illness that they decided to abandon Brunei to return to Manila on 26 June 1578, after just 72 days. Before doing so, they burned the mosque, a high structure with a five-tier roof. 
Pengiran Seri Lela died in August–September 1578, probably from the same illness that had afflicted his Spanish allies, although there was suspicion he could have been poisoned by the ruling Sultan. Seri Lela's daughter, the Bruneian princess, left with the Spanish and went on to marry a Christian Tagalog, named Agustín de Legazpi of Tondo, and had children in the Philippines. 
In 1587, Magat Salamat, one of the children of Lakan Dula, along with Lakan Dula's nephew and lords of the neighboring areas of Tondo, Pandacan, Marikina, Candaba, Navotas and Bulacan, were executed when the Tondo Conspiracy of 1587–1588 failed;  a planned grand alliance with the Japanese Christian-captain, Gayo, and Brunei's Sultan, would have restored the old aristocracy. Its failure resulted in the hanging of Agustín de Legaspi and the execution of Magat Salamat (the crown-prince of Tondo).  Thereafter, some of the conspirators were exiled to Guam or Guerrero, Mexico.
The Spanish then conducted the centuries long Spanish–Moro conflict against the Sultanates of Maguindanao, Lanao and Sulu. War was also waged against the Sultanate of Ternate and Tidore (in response to Ternatean slaving and piracy against Spain's allies: Bohol and Butuan).  During the Spanish–Moro conflict, the Moros of Muslim Mindanao conducted piracy and slave-raids against Christian settlements in the Philippines. The Spanish fought back by establishing Christian fort-cities such as Zamboanga City on Muslim Mindanao. The Spanish considered their war with the Muslims in Southeast Asia an extension of the Reconquista, a centuries-long campaign to retake and rechristianize the Spanish homeland which was invaded by the Muslims of the Umayyad Caliphate. The Spanish expeditions into the Philippines were also part of a larger Ibero-Islamic world conflict  that included a rivalry with the Ottoman Caliphate, which had a center of operations at its nearby vassal, the Sultanate of Aceh. 
In 1593, the governor-general of the Philippines, Luis Pérez Dasmariñas, set out to conquer Cambodia, igniting the Cambodian–Spanish War. Some 120 Spaniards, Japanese, and Filipinos, sailing aboard three junks, launched an expedition to Cambodia. After an altercation between the Spanish expedition members and some Chinese merchants at the port left a few Chinese dead, the Spanish were forced to confront the newly declared king Anacaparan, burning much of his capital while defeating him. In 1599, Malay Muslim merchants defeated and massacred almost the entire contingent of Spanish troops in Cambodia, putting an end to Spanish plans to conquer it. Another expedition, one to conquer Mindanao, was also lacking in success. In 1603, during a Chinese rebellion, Pérez Dasmariñas was beheaded, and his head was mounted in Manila along with those of several other Spanish soldiers.[ citation needed]
In 1580, King Philip saw the opportunity to strengthen his position in Iberia when the last member of the Portuguese royal family, Cardinal Henry of Portugal, died. Philip asserted his claim to the Portuguese throne and in June sent the Duke of Alba with an army to Lisbon to assure his succession. [n] Philip famously remarked upon his acquisition of the Portuguese throne: "I inherited, I bought, I conquered," a variation on Julius Caesar and Veni, Vidi, Vici. Thus, Philip added to his possessions a vast colonial empire in Africa, Brazil, and the East Indies, seeing a flood of new revenues coming to the Habsburg crown; and the success of colonization all around his empire improved his financial position, enabling him to show greater aggression towards his enemies.
Philip established the Council of Portugal, on the pattern of the royal councils, the Council of Castile, Council of Aragon, and Council of the Indies, that oversaw particular jurisdictions, but all under the same monarch. [o] As a result of the Iberian Union, Phillip II's enemies became Portugal's enemies, such as the Dutch in the Dutch–Portuguese War, England or France. War with the Dutch led to invasions of many countries in Asia, including Ceylon and commercial interests in Japan, Africa ( Mina), and South America. During the reign of Philip IV (Philip III of Portugal) in 1640, the Portuguese revolted and fought for their independence from the rest of Iberia. The Council of Portugal was subsequently dissolved.
Philip II's successor, Philip III, made chief minister the capable Francisco Goméz de Sandoval y Rojas, Duke of Lerma as a favourite, the first of the validos ('most worthy'). Philip sought to reduce foreign conflicts, since even the vast revenues could not sustain the nearly bankrupted kingdom. [q] Philip was forced to declare bankruptcy in 1607.
England, suffering from a series of repulses at sea and from a guerrilla war by Catholics in Ireland, who were supported by Spain, agreed to the Treaty of London (1604). Philip's chief minister, the Duke of Lerma, also steered Spain toward peace with the northern Netherlands in 1609, although the conflict was to emerge again at a later point.  [r]
In 1609, the Twelve Years' Truce was signed between Spain and the United Provinces in the European theatre of war. At last, Spain was at peace – the Pax Hispanica. Spain made a fair recovery during the truce, putting its finances in order and doing much to restore its prestige and stability in the run-up to the last truly great war in which she would play a leading part. The Duke of Lerma (and to a large extent Philip II) had been uninterested in the affairs of their ally, Austria. In 1618, the king replaced him with Don Baltasar de Zúñiga, a veteran ambassador to Vienna. Don Balthasar believed that the key to restraining the resurgent French and eliminating the Dutch was a closer alliance with the Habsburg Monarchy. In 1618, beginning with the Defenestration of Prague, Austria and the Holy Roman Emperor, Ferdinand II, embarked on a campaign against the Protestant Union and Bohemia. Don Balthasar encouraged Philip to join the Austrian Habsburgs in the war, and Ambrogio Spinola was sent at the head of the Army of Flanders to intervene. Thus, Spain entered into the Thirty Years' War (1618–48).
When Philip IV succeeded his father in 1621, Spain was clearly in economic and political decline, a source of consternation. The learned arbitristas sent the king more analyses of Spain's problems and possible solutions. As an illustration of the precarious economic situation of Spain at the time, it was actually Dutch bankers who financed the East India merchants of Seville. At the same time, everywhere in the world Dutch entrepreneurship and settlements were undermining Spanish and Portuguese hegemony. [s]
In 1622, Don Balthasar was replaced by Gaspar de Guzmán, Count-Duke of Olivares.  The war with the Netherlands was renewed in 1621 with Spinola taking the fortress of Breda (an episode immortalized by the Spanish painter Diego Velázquez in his famous painting Las Lanzas). In 1624, Olivares proposed the Union of Arms, which aimed at raising revenues from the Indies and other kingdoms of Iberia for imperial defense, which met strong opposition.   [t] In 1627, the crown declared bankruptcy. [u] The Dutch, who during the Twelve Years' Truce had made increasing their navy a priority, (which showed its maturing potency at the Battle of Gibraltar in 1607), managed to strike a great blow against Spanish maritime trade with the capture by captain Piet Hein of a Spanish treasure fleet in Cuba in 1628.
Spanish military resources were stretched across Europe and also at sea as they sought to protect maritime trade against the greatly improved Dutch and French fleets, while still occupied with the Ottoman and associated Barbary pirate threat in the Mediterranean. In the meantime the aim of choking Dutch shipping was carried out by the Dunkirkers with considerable success. In 1625, a Spanish-Portuguese fleet, under Admiral Fadrique de Toledo, regained the strategically vital Brazilian city of Salvador da Bahia from the Dutch. In 1635, France declared war on Spain, hoping to maintain the balance of power in Europe by halting Habsburg expansion; Philip pursued a "Netherlands-first" strategy, focusing on fighting the Dutch instead of fighting the French. The Spanish navy was unable to adequately resupply the crown's troops in Flanders, and Spain was forced to make peace with the Dutch. The Peace of Westphalia ended the Spanish-Dutch War in 1648, with Spain recognizing the independence of the Seven United Provinces of the Netherlands. The Franco-Spanish War continued for eleven more years, in the course of which England joined in on the side of France. [v] Spain agreed to the Peace of the Pyrenees in 1659 that ceded to France the Spanish Netherlands territory of Artois and the northern Catalan county of Roussillon. France was now the dominant power on continental Europe, and the United Provinces were dominant in the Atlantic.
The Great Plague of Seville (1647–52) killed up to 25% of Seville's population.[ citation needed] Sevilla, and indeed the economy of Andalucía, would never recover from such complete devastation. Altogether Spain was thought to have lost 500,000 people, out of a population of slightly fewer than 10,000,000, or nearly 5% of its entire population. Historians reckon the total cost in human lives due to these plagues throughout Spain, throughout the entire 17th century, to be a minimum of nearly 1.25 million. 
In the Indies, Spanish claims were effectively challenged in the Caribbean by the English, the French, and the Dutch, which all established permanent colonies there, after raiding and trading starting in the late 16th century. Although the islands' loss barely diminished its American territories, the islands were strategically located and held political, military, and economic advantages in the long run. Spain's main Caribbean strongholds of Cuba and Puerto Rico remained in crown hands, but Windward Islands and Leeward Islands which Spain claimed but did not occupy were vulnerable. The English settled St Kitts (1623–25), Barbados (1627); Nevis (1628); Antigua (1632), and Montserrat (1632); they captured Jamaica in 1655 after failing to capture Santo Domingo. The French settled in Martinique and Guadeloupe in 1635; and the Dutch acquired trading bases in Curaçao, St Eustace, and St Martin. 
The Spain that the sickly young Charles II (1661–1700) inherited was clearly in decline and there were more losses immediately. Charles became monarch in 1665 when he was four years old, so a regency of his mother and a five-member government junta ruled in his name, headed by his natural half-brother John Joseph of Austria.
Charles and his regency were incompetent in dealing with the War of Devolution that Louis XIV of France prosecuted against the Spanish Netherlands in 1667–68, losing considerable prestige and territory, including the cities of Lille and Charleroi. In the Franco-Dutch War of 1672–78, Spain lost still more territory when it came to the assistance of its former Dutch enemies, most notably Franche-Comté in Burgundy. In the Nine Years' War (1688–97), Louis XIV once again invaded the Spanish Netherlands. The war ended with most of the Spanish Netherlands under French occupation, including the important cities of Ghent and Luxembourg. The war revealed to Europe the vulnerability of the Spanish defenses and bureaucracy. Furthermore, the ineffective Spanish Habsburg government took no action to improve them. [w]
Charles II was childless and weak ruler, known as "The Bewitched". In his last will and testament he left his throne to a French prince, the Bourbon Philip of Anjou, rather than to another Habsburg. This resulted in the War of the Spanish Succession, with the Habsburg Monarchy, the Dutch and the English challenging Charles II's choice of a Bourbon prince to succeed him as king.
To the end of its imperial rule, Spain called its overseas possessions in the Americas and the Philippines "The Indies", an enduring remnant of Columbus's notion that he had reached Asia by sailing west. When these territories reach a high level of importance, the crown established the Council of the Indies in 1524, following the conquest of the Aztec Empire, asserting permanent royal control over its possessions. Regions with dense indigenous populations and sources of mineral wealth attracting Spanish settlers became colonial centers, while those without such resources were peripheral to crown interest. Once regions incorporated into the empire and their importance assessed, overseas possessions came under stronger or weaker crown control.  The crown learned its lesson with the rule of Christopher Columbus and his heirs in the Caribbean, and they never subsequently gave authorization of sweeping powers to explorers and conquerors. The Catholic Monarchs' conquest of Granada in 1492 and their expulsion of the Jews "were militant expressions of religious statehood at the moment of the beginning of the American colonization."  The crown's power in the religious sphere was absolute in its overseas possessions through the papacy's grant of the Patronato real, and "Catholicism was indissolubly linked with royal authority."  Church-State relations were established in the conquest era and remained stable until the end of the Habsburg era in 1700, when the Bourbon monarchs implemented major reforms and changed the relationship between crown and altar.
The crown's administration of its overseas empire was implemented by royal officials in both the civil and religious spheres, often with overlapping jurisdictions. The crown could administer the empire in the Indies by using native elites as intermediaries with the large indigenous populations. Administrative costs of empire were kept low, with a small number of Spanish officials generally paid low salaries.  Crown policy to maintain a closed commercial system limited to one port in Spain and only a few in the Indies was in practice not closed, with European merchant houses supplying Spanish merchants in the Spanish port of Seville with high quality textiles and other manufactured goods that Spain itself could not supply. Much of the silver of the Indies was diverted into those European merchant houses. Crown officials in the Indies enabled the creation of a whole commercial system in which they could coerce native populations to participate while reaping profits themselves in cooperation with merchants. 
The Spanish conquest was facilitated by the spread of diseases such as smallpox, common in Europe but never present in the New World, which reduced the indigenous populations in the Americas. This sometimes caused a labor shortage for plantations and public works and so the colonists informally and gradually, at first, initiated the Atlantic slave trade.
One of the most accomplished conquistadors was Hernán Cortés, who, leading a relatively small Spanish force but with local translators and the crucial support of thousands of native allies, achieved the Spanish conquest of the Aztec Empire in the campaigns of 1519–1521. This territory later became the Viceroyalty of New Spain, present day Mexico. Of equal importance was the Spanish conquest of the Inca Empire by Francisco Pizarro, which would become the Viceroyalty of Peru.  The Spanish conquest of the Maya began in 1524, but the Maya kingdoms resisted integration into the Spanish Empire with such tenacity that their defeat took almost two centuries.
After the conquest of Mexico, rumors of golden cities ( Quivira and Cíbola in North America and El Dorado in South America) motivated several other expeditions. Many of those returned without having found their goal, or finding it much less valuable than was hoped. Indeed, the New World colonies only began to yield a substantial part of the Crown's revenues with the establishment of mines such as that of Potosí (Bolivia) and Zacatecas (Mexico) both started in 1546. By the late 16th century, silver from the Americas accounted for one-fifth of Spain's total budget. 
Eventually the world's stock of precious metal was doubled or even tripled by silver from the Americas.  Official records indicate that at least 75% of the silver was taken across the Atlantic to Spain and no more than 25% across the Pacific to China. Some modern researchers argue that due to rampant smuggling about 50% went to China.  In the 16th century "perhaps 240,000 Europeans" entered American ports. 
Further Spanish settlements were progressively established in the New World: New Granada in the 1530s (later in the Viceroyalty of New Granada in 1717 and present day Colombia), Lima in 1535 as the capital of the Viceroyalty of Peru, Buenos Aires in 1536 (later in the Viceroyalty of the Río de la Plata in 1776), and Santiago in 1541.
Florida was colonized in 1565 by Pedro Menéndez de Avilés when he founded St. Augustine and then promptly destroyed Fort Caroline in French Florida and massacred its several hundred Huguenot inhabitants after they surrendered. Saint Augustine quickly became a strategic defensive base for the Spanish ships full of gold and silver being sent to Spain from its New World dominions.
The Portuguese mariner sailing for Castile, Ferdinand Magellan, died while in the Philippines commanding a Castilian expedition in 1522, which was the first to circumnavigate the globe. The Basque commander Juan Sebastián Elcano led the expedition to success. Spain sought to enforce their rights in the Moluccan islands, which led a conflict with the Portuguese, but the issue was resolved with the Treaty of Zaragoza (1525), settling the location of the antimeridian of Tordesillas, which would divide the world into two equal hemispheres. From then on, maritime expeditions led to the discovery of several archipelagos in the South Pacific as the Pitcairn Islands, the Marquesas, Tuvalu, Vanuatu, the Solomon Islands or New Guinea, to which Spain laid claim.
Most important in Pacific exploration was the claim on the Philippines, which was populous and strategically located for the Spanish settlement of Manila and entrepôt for trade with China. On 27 April 1565, the first permanent Spanish settlement in the Philippines was founded by Miguel López de Legazpi and the service of Manila Galleons was inaugurated. The Manila Galleons shipped goods from all over Asia across the Pacific to Acapulco on the coast of Mexico. From there, the goods were transshipped across Mexico to the Spanish treasure fleets, for shipment to Spain. The Spanish trading port of Manila facilitated this trade in 1572. Although Spain claimed islands in the Pacific, it did not encounter or claim the Hawaiian Islands. The control of Guam, Mariana Islands, Caroline Islands, and Palau came later, from the end of the 17th century, and remained under Spanish control until 1898.
In the 18th century, Spain was concerned with increasing Russian and British influence in the Pacific Northwest of North America and sent several expeditions to explore and further shore up Spanish claims to the region. 
This section is written like a personal reflection, personal essay, or argumentative essay that states a Wikipedia editor's personal feelings or presents an original argument about a topic. (November 2020)
Codes regulated the status of individuals and groups in the empire in both the civil and religious spheres, with Spaniards (peninsular- and American-born) monopolizing positions of economic privilege and political power.[ dubious ] Royal law and Catholicism codified and maintained hierarchies of class and race[ dubious ], while all were subjects of the crown and mandated to be Catholic.  The crown took active steps to establish and maintain Catholicism by evangelizing the pagan indigenous populations, as well as African slaves not previously Christian, and incorporating them into Christendom. The Catholicism remains the dominant religion in Spanish America. The crown also imposed restrictions on emigration to the Americas, excluding Jews and crypto-Jews, Protestants, and foreigners, using the Casa de Contratación to vet potential emigres and issue licenses to travel.
The portrait to the right was most likely used as a souvenir. For those who traveled to the New World and back it was common to bring back souvenirs as there were a great interest in what the New World meant. The land would be significantly different but there was a special emphasis put on the emerging mixed races. Not only was there whites mixing with blacks but there were natives mixing with both whites and blacks as well. From a Spanish viewpoint, the castas paintings would most-likely have provided a sort of sense to the madness that was mixed races. There were political implications of this portrait as well. The mestizo child appears to be literate with a satisfied grin facing his father alluding to the opportunity the child has due to his father being European. 
A central question from the time of first Contact with indigenous populations was their relationship to the crown and to Christianity. Once those issues were resolved theologically, in practice the crown sought to protect its new vassals. It did so by dividing peoples of the Americas into the República de Indios, the native populations, and the República de Españoles. The República de Españoles was the entire Hispanic sector, composed of Spaniards, but also Africans (enslaved and free), as well as mixed-race castas.
Within the República de Indios, men were explicitly excluded from ordination to the Catholic priesthood and obligation for military service as well as the jurisdiction of the Inquisition. Indians under colonial rule who lived in pueblos de indios had crown protections due to their statuses as legal minors. Due to the lack of prior exposure to the Catholic faith, Queen Isabella had declared all indigenous peoples her subjects. This differed from people of the African continent because these populations had theoretically been exposed to Catholicism and chose not to follow it. This religious differentiation is important because it gave indigenous communities legal protections from members of the Républica de Españoles. In fact, an often overlooked aspect of the colonial legal system was that members of the pueblos de indios could appeal to the crown and circumvent the legal system in the Républica de Españoles. The statuses of the indigenous populations as legal minors barred them from becoming priests, but the républica de indios operated with a fair amount of autonomy. Missionaries also acted as guardians against encomendero exploitation. Indian communities had protections of traditional lands by the creation of community lands that could not be alienated, the fondo legal. They managed their own affairs internally through Indian town government under the supervision of royal officials, the corregidores and alcaldes mayores. Although indigenous men were barred from becoming priests, indigenous communities created religious confraternaties under priestly supervision, which functioned as burial societies for their individual members, but also organized community celebrations for their patron saint. Blacks also had separate confraternities, which likewise contributed to community formation and cohesion, reinforcing identity within a Christian institution. 
Conquest and evangelization were inseparable in Spanish America. The first order to make the trip to the Americas were the Franciscans, led by Pedro de Gante. Franciscans believed that living a spiritual life of poverty and holiness was the best way to be an example that inspired others to convert. The friars would walk into the towns barefoot as a display of their surrender to God in a sort of theater of conversion. With this began the practice of evangelization of the peoples of the new world as supported by the Spanish government. Religious orders in Spanish America had their own internal structures and were organizationally autonomous, but nonetheless were very important to the structure of colonial society. They had their own resources and hierarchies. Though some orders took vows of poverty, by the time the second wave of friars came to the Americas and as their numbers grew, the orders began amassing wealth and thus became key economic players. The church, as this wealthy power, had huge estates and built large constructions such as gilded monasteries and cathedrals. Priests themselves also became wealthy landowners. Orders like the Franciscans also established schools for the indigenous elites as well as hired indigenous laborers, thereby shifting the dynamics in the indigenous communities and their relationship to the Spanish.
After the fall of the Aztec and Inca empires, the rulers of the empires were replaced by the Spanish monarchy, while retaining much of the hierarchical indigenous structures. The crown recognized noble status of elite Indians, giving them exemption from the head-tax and the right to use the nobles title don and doña. Indigenous noblemen were a key group for the administration of the Spanish Empire, since they served as intermediaries between crown officials and indigenous communities.   Indigenous noblemen could serve on cabildos, ride horses, and carry firearms. The crown's recognition of indigenous elites as nobles meant that these men were incorporated into colonial system with privileges separating them from Indian commoners. Indian noblemen were thus crucial to the governance of the huge indigenous population. Through their continued loyalty to the crown, they maintained their positions of power within their communities but also served as agents of colonial governance. The Spanish Empire's use of local elites to rule large populations that are ethnically distinct from the rulers has long been practiced by earlier empires.  Indian caciques were crucial in the early Spanish period, especially when the economy was still based on extracting tribute and labor from commoner Indians who had rendered goods and service to their overlords in the prehispanic period. Caciques mobilized their populations for encomenderos and, later, repartimiento recipients chosen by the crown. The noblemen became the officers of the cabildo in indigenous communities, regulating internal affairs, as well as defending the communities’ rights in court. In Mexico, this was facilitated by the 1599 establishment of the General Indian Court (Juzgado General de Indios), which heard legal disputes in which indigenous communities and individuals were engaged. With legal mechanisms for dispute-resolution, there were relatively few outbreaks of violence and rebellion against crown rule. Eighteenth-century rebellions in long-peaceful areas of Mexico, the Tzeltal Rebellion of 1712 and most spectacularly in Peru with the Tupac Amaru Rebellion (1780–81) saw indigenous noblemen leading uprisings against the Spanish state.
In the República de Españoles, class and race hierarchies were codified in institutional structures. Spaniards emigrating to The Indies were to be Old Christians of pure Christian heritage, with the crown excluding New Christians, converts from Judaism and their descendants, because of their suspect religious status. The crown established the Inquisition in Mexico and Peru in 1571, and later Cartagena de Indias (Colombia), to guard Catholics from the influence of crypto-Jews, Protestants, and foreigners. Church practices established and maintained racial hierarchies[ dubious ] by recording baptism, marriage, and burial were kept separate registers for different racial groups. Churches were also physically divided by race. 
Race mixture ( mestizaje) was a fact of colonial society, with the three racial groups, European whites (españoles), Africans (negros), and Indians (indios) producing mixed-race offspring, or castas. There was a pyramid of racial status[ dubious ] with the apex being the small number of European white (españoles), a slightly larger number of mixed-race castas, who, like the whites were mainly urban dwelling, and the largest populations were Indians living in communities in the countryside. Although Indians were classified as part of the Repúbica de Indios, their offspring of unions with Españoles and Africans were castas. White-Indian mixtures were more socially acceptable in the Hispanic sphere, with the possibility over generations of mixed-race offspring being classified as Español. Any offspring with African ancestry could never remove the "stain" of their racial heritage, since Africans were seen as "natural slaves". Eighteenth-century paintings depicted elites' ideas of the sistema de castas in hierarchical order,  but there was some fluidity in the system rather than absolute rigidity. 
The criminal justice system in Spanish cities and towns meted out justice depending on the severity of the crime and the class, race, age, health, and gender of the accused.[ dubious ] Non-whites (blacks and mixed-race castas) were far more often and more severely punished[ dubious ], while Indians, considered legal minors, were not expected to behave better and were more leniently punished. Royal and municipal legislation attempted to control the behavior of black slaves, who were subject to a curfew, could not carry arms, and were prohibited from running away from their masters. As the urban, white, lower-class (plebeian) population increased, they too were increasingly subject to criminal arrest and punishment. Capital punishment was seldom employed, with the exception of sodomy and recalcitrant prisoners of the Inquisition, whose deviation from Christian orthodoxy was considered extreme. However, only the civil sphere could exercise capital punishment and prisoners were "relaxed", that is, released to civil authorities. Often criminals served sentences of hard labor in textile workshops (obrajes), presidio service on the frontier, and as sailors on royal ships. Royal pardons to ordinary criminals were often accorded on the celebration of a royal marriage, coronation, or birth. 
Elite Spanish men had access to special corporate protections ( fueros) and had exemptions by virtue of their membership in a particular group.[ dubious ] One important privilege was their being judged by the court of their corporation. Members of the clergy held the fuero eclesiástico were judged by ecclesiastical courts, whether the offense was civil or criminal. In the eighteenth century the crown established a standing military and with it, special privileges (fuero militar). The privilege extended to the military was the first fuero extended to the non-whites who served the crown. Indians had a form of corporate privilege through their membership in indigenous communities. In central Mexico, the crown established a special Indian court (Juzgado General de Indios), and legal fees, including access to lawyers, were funded by a special tax.  The crown extended the peninsular institution of the merchant guild ( consulado) first established in Spain, including Seville (1543), and later established in Mexico City and Peru. Consulado membership was dominated by peninsular-born Spaniards, usually members of transatlantic commercial houses. The consulados’ tribunals heard disputes over contracts, bankruptcy, shipping, insurance and the like and became a wealthy and powerful economic institution and source of loans to the viceroyalties.  Transatlantic trade remained in the hands of mercantile families based in Spain and the Indies. The men in the Indies were often younger relatives of the merchants in Spain, who often married wealthy American-born women. American-born Spanish men (criollos) in general did not pursue commerce but instead owned landed estates, entered the priesthood, or became a professional. Within elite families then peninsular-born Spaniards and criollos were often kin. 
The regulation of the social system perpetuated the privileged status of wealthy elite white men against the vast indigenous populations, and the smaller but still significant number of mixed-race castas.[ dubious ] In the Bourbon era, for the first time there was a distinction made between Iberian-born and American-born Spaniards, In the Habsburg era, in law and ordinary speech they were grouped together without distinction. Increasingly American-born Spaniards developed a distinctly local focus, with peninsular-born (peninsulares) Spaniards increasingly seen as outsiders and resented, but this was a development in the late colonial period. Resentment against peninsulares was due to a deliberate change in crown policy, which systematically favored them over American-born criollos for high positions in the civil and religious hierarchies.  This left criollos only the membership in a city or town's cabildo. When the secularizing Bourbon monarchy pursued policies strengthening secular royal power over religious power, it attacked the fuero eclesiástico, which for many members of the lower clergy was a significant privilege. Parish priests who had functioned as royal officials as well as clerics in Indian towns lost their privileged position. At the same time the crown established a standing army and promoted militias for the defense of empire, creating a new avenue of privilege for creole men and for castas, but excluding indigenous men from conscription or voluntary service.
The Spanish Empire benefited from favorable factor endowments in its overseas possessions with their large, exploitable, indigenous populations and rich mining areas.  Given that, the crown attempted to create and maintain a classic, closed mercantile system, warding off competitors and keeping wealth within the empire. While the Habsburgs were committed to maintaining a state monopoly in theory, in reality the Empire was a porous economic realm and smuggling was widespread. In the 16th and 17th century under the Habsburgs, Spain experienced a gradual decline in economic conditions, especially relative to the industrial development of its French, Dutch, and English rivals. Many of the goods being exported to the Empire originated from manufacturers in northwest Europe, rather than in Spain. But illicit commercial activities became a part of the Empire's administrative structure. Supported by large flows of silver from America, trade prohibited by Spanish mercantilist trade restrictions flourished, because it provided a source of income to both crown officials and private merchants.  The local administrative structure in Buenos Aires, for example, was established through its oversight of both legal and illegal commerce.  In the eighteenth century the crown attempted to reverse course under the Bourbon monarchs. The crown's pursuit of wars to maintain and expand territory, defend the Catholic faith and stamp out Protestantism, and beat back Ottoman Turkish strength outstripped its ability to pay for it all, despite the huge production of silver in Peru and Mexico. Most of that flow paid mercenary soldiers in the European religious wars in the sixteenth and seventeenth centuries and into foreign merchants’ hands to pay for the consumer goods manufactured in northern Europe. Paradoxically the wealth of the Indies impoverished Spain and enriched northern Europe. In the eighteenth century the crown attempted to reverse course under the Bourbon monarchs. 
This was well recognized in Spain, with writers on political economy, the arbitristas sending the crown lengthy analyses in the form of "memorials, of the perceived problems and with proposed solutions."   According to these thinkers, "Royal expenditure must be regulated, the sale of office halted, the growth of the church checked. The tax system must be overhauled, special concessions be made to agricultural laborers, rivers be made navigable and dry lands irrigated. In this way alone could Castile's productivity increased, its commerce restored, and its humiliating dependence on foreigners, on the Dutch and the Genoese, be brought to an end." 
From the early days of the Caribbean and conquest era, the crown attempted to control trade between Spain and the Indies with restrictive policies enforced by the House of Trade (est. 1503) in Seville. Shipping was through particular ports in Spain (Seville, subsequently Cadiz), Spanish America (Veracruz, Acapulco, Havana, Cartagena de Indias, and Callao/Lima) and the Philippines (Manila). Spanish settlers in the Indies in the very early period were few and Spain could supply sufficient goods to them. But as the Aztec and Inca empires were conquered in the early sixteenth century and then large deposits of silver found in both Mexico and Peru, the regions of those major empires, Spanish immigration increased and demand for goods rose far beyond Spain's ability to supply it. Since Spain had little capital to invest in the expanding trade and no significant commercial group, bankers and commercial houses in Genoa, Germany, The Netherlands, France, and England supplied both investment capital and goods in a supposedly closed system. Even in the sixteenth century, Spain recognized that the idealized closed system did not function in reality. Despite that the crown did not alter its restrictive structure or advocacy of fiscal prudence, despite the pleas of the arbitristas, the Indies trade remained nominally in the hands of Spain, but in fact enriched the other European countries.
The crown established the system of treasure fleets (Spanish: flota) to protect the conveyance of silver to Seville (later Cadiz). Merchants in Seville conveyed consumer goods that were registered and taxed by the House of Trade. were sent to the Indies were produced in other European countries. Other European commercial interests came to dominate supply, with Spanish merchant houses and their guilds ( consulados) in Spain and the Indies acting as mere middlemen, reaping profits a slice of the profits. However, those profits did not promote Spanish economic development of a manufacturing sector, with its economy continuing to be based on agriculture. The wealth of the Indies led to prosperity in northern Europe, particularly The Netherlands and England, both Protestant. As Spain's power weakened in the seventeenth century, England, The Netherlands, and the French took advantage overseas by seizing islands in the Caribbean, which became bases for a burgeoning contraband trade in Spanish America. Crown officials who were supposed to suppress contraband trade were quite often in cahoots with the foreigners, since it was a source of personal enrichment. In Spain, the crown itself participated in collusion with foreign merchant houses, since they paid fines, "meant to establish a compensation to the state for losses through fraud." it became for merchant houses a calculated risk for doing business; for the crown it gained income it would have lost otherwise. Foreigner merchants were part of the supposed monopoly system of trade. The transfer of the House of Trade from Seville to Cadiz meant even easier access of foreign merchant houses to the Spanish trade. 
The motor of the Spanish imperial economy that had a global impact was silver mining. The mines in Peru and Mexico were in the hands of a few elite mining entrepreneurs, with access to capital and a stomach for the risk mining entailed. They operated under a system of royal licensing, since the crown held the rights to subsoil wealth. Mining entrepreneurs assumed all the risk of the enterprise, while the crown gained a 20% slice of the profits, the royal fifth ("Quinto"). Further adding to the crown's revenues was mining was that it crown held a monopoly on the supply of mercury, used for separating pure silver from silver ore in the patio process. The crown kept the price high, thereby depressing the volume of silver production.  Protecting its flow from Mexico and Peru as it transited to ports for shipment to Spain resulted early on in a convoy system (the flota) sailing twice a year. Its success can be judged by the fact that the silver fleet was captured only once, in 1628 by Dutch privateer Piet Hein. That loss resulted in the bankruptcy of the Spanish crown and an extended period of economic depression in Spain.  One practice used by the Spanish to gather workers for the mines was called repartimiento. This was a rotational forced labor system where indigenous pueblos were obligated to send laborers to work in Spanish mines and plantations for a set number of days out of the year. Repartimiento was not implemented to replace slave labor but instead existed alongside free wage labor, slavery, and indentured labor. It was, however, a way for the Spanish to procure cheap labor thus boosting the mining-driven economy. It is important to note that the men who worked as repartimiento laborers were not always resistant to the practice. Some were drawn to the labor as a way to supplement the wages they earned cultivating fields so as to support their families and, of course, pay tributes. At first, a Spaniard could get repartimiento laborers to work for them with permission from a crown official, such as a viceroy, only on the basis that this labor was absolutely necessary to provide the country with important resources. This condition became laxer as the years went on and various enterprises had repartimiento laborers where they would work in dangerous conditions for long hours and low wages. 
During the Bourbon era, economic reforms sought to reverse the pattern that left Spain impoverished with no manufacturing sector and its colonies’ need for manufactured goods supplied by other nations. It attempted to restructure to establish as closed trading system, but it was hampered by the terms of the 1713 Treaty of Utrecht. The treaty ending the War of the Spanish Succession with a victory for the Bourbon French candidate for the throne had a provision for British merchants to legally sell by a license ( Asiento de Negros) slaves to Spanish America. The provision undermined the possibility of a revamped Spanish monopoly system. The merchants also used the opportunity to engage in contraband trade of their manufactured goods. Crown policy sought to make legal trade more appealing than contraband by instituting free commerce (comercio libre) in 1778 whereby Spanish American ports could trade with each other and they could trade with any port in Spain. It was aimed at revamping a closed Spanish system and outflanking the increasingly powerful British. Silver production revived in the eighteenth century, with production far surpassing the earlier output. The crown reducing the taxes on mercury, meaning that a greater volume of pure silver could be refined. Silver mining absorbed most available capital in Mexico and Peru, and the crown emphasized the production of precious metals that was sent to Spain. There was some economic development in the Indies to supply food, but a diversified economy did not emerge.  The economic reforms of the Bourbon era both shaped and were themselves impacted by geopolitical developments in Europe. The Bourbon Reforms arose out of the War of the Spanish Succession. In turn, the crown's attempt to tighten its control over its colonial markets in the Americas led to further conflict with other European powers who were vying for access to them. After a sparking a series of skirmishes throughout the 1700s over its stricter policies, Spain's reformed trade system led to war with Britain in 1796.  In the Americas, meanwhile, economic policies enacted under the Bourbons had different impacts in different regions. On one hand, silver production in New Spain greatly increased and led to economic growth. But much of the profits of the revitalized mining sector went to mining elites and state officials, while in rural areas of New Spain conditions for rural workers deteriorated, contributing to social unrest that would impact subsequent revolts.
In 1525, King Charles I of Spain ordered an expedition led by friar García Jofre de Loaísa to go to Asia by the western route to colonize the Maluku Islands (known as Spice Islands, now part of Indonesia), thus crossing first the Atlantic and then the Pacific oceans. Ruy López de Villalobos sailed to the Philippines in 1542–43. From 1546 to 1547 Francis Xavier worked in Maluku among the peoples of Ambon Island, Ternate, and Morotai, and laid the foundations for the Christian religion there.
In 1564, Miguel López de Legazpi was commissioned by the viceroy of New Spain, Luis de Velasco, to explore the Maluku Islands where Magellan and Ruy López de Villalobos had landed in 1521 and 1543, respectively. The expedition was ordered by King Philip II of Spain, after whom the Philippines had earlier been named by Villalobos. El Adelantado Legazpi established settlements in the East Indies and the Pacific Islands in 1565. He was the first Governor-General of the Spanish East Indies. After obtaining peace with various indigenous tribes, López de Legazpi made Manila the capital in 1571.
The Spanish settled and took control of Tidore in 1603 to trade spices and counter Dutch encroachment in the archipelago of Maluku. The Spanish presence lasted until 1663, when the settlers and military were moved back to the Philippines. Part of the Ternatean population chose to leave with the Spanish, settling near Manila in what later became the municipality of Ternate.
In 1542, Juan Rodríguez Cabrillo traversed the coast of California and named many of its features. In 1601, Sebastián Vizcaíno mapped the coastline in detail and gave new names to many features. Martín de Aguilar, lost from the expedition led by Sebastián Vizcaíno, explored the Pacific coast as far north as Coos Bay in present-day Oregon.
Since the 1549 arrival to Kagoshima (Kyushu) of a group of Jesuits with St. Francis Xavier missionary and Portuguese traders, Spain was interested in Japan. In this first group of Jesuit missionaries were included Spaniards Cosme de Torres and Juan Fernández.
In 1611, Sebastián Vizcaíno surveyed the east coast of Japan and from the year of 1611 to 1614 he was ambassador of King Philip III in Japan returning to Acapulco in the year of 1614. In 1608, he was sent to search for two mythical islands called Rico de Oro (island of gold) and Rico de Plata (island of silver).
With the 1700 death of the childless Charles II of Spain, the crown of Spain was contested in the War of the Spanish Succession. Under the Treaties of Utrecht (11 April 1713) ending the war, the French prince of the House of Bourbon, Philippe of Anjou, grandchild of Louis XIV of France, became the king Philip V. He retained the Spanish overseas empire in the Americas and the Philippines. The settlement gave spoils to those who had backed a Habsburg for the Spanish monarchy, ceding European territory of the Spanish Netherlands, Naples, Milan, and Sardinia to Austria; Sicily and parts of Milan to the Duchy of Savoy, and Gibraltar and Menorca to the Kingdom of Great Britain. The treaty also granted British merchants the exclusive right to sell slaves in Spanish America for thirty years, the asiento de negros, as well as licensed voyages to ports in Spanish colonial dominions and openings. 
Spain's economic and demographic recovery had begun slowly in the last decades of the Habsburg reign, as was evident from the growth of its trading convoys and the much more rapid growth of illicit trade during the period. (This growth was slower than the growth of illicit trade by northern rivals in the empire's markets.) However, this recovery was not then translated into institutional improvement, rather the "proximate solutions to permanent problems."  This legacy of neglect was reflected in the early years of Bourbon rule in which the military was ill-advisedly pitched into battle in the War of the Quadruple Alliance (1718–20). Spain was defeated by an alliance of Britain, France, the Dutch Republic (United Provinces), and Austria. Following the war, the new Bourbon monarchy took a much more cautious approach to international relations, relying on a family alliance with Bourbon France, and continuing to follow a program of institutional renewal.
The crown program to enact reforms that promoted administrative control and efficiency in the metropole to the detriment of interests in the colonies undermined creole elites' loyalty to the crown. When French forces of Napoleon Bonaparte invaded the Iberian peninsula in 1808, Napoleon ousted the Spanish Bourbon monarchy, placing his brother Joseph Bonaparte on the Spanish throne. There was a crisis of legitimacy of crown rule in Spanish America, leading to the Spanish American wars of independence (1808–1826).
The Spanish Bourbons' broadest intentions were to reorganize the institutions of empire to better administer it for the benefit of Spain and the crown. It sought to increase revenues and to assert greater crown control, including over the Catholic Church. Centralization of power was to be for the benefit of the crown and the metropole and for the defense of its empire against foreign incursions.  From the viewpoint of Spain, the structures of colonial rule under the Habsburgs were no longer functioning to the benefit of Spain, with much wealth being retained in Spanish America and going to other European powers. The presence of other European powers in the Caribbean, with the English in Barbados (1627), St Kitts (1623–25), and Jamaica (1655); the Dutch in Curaçao, and the French in Saint Domingue (Haiti) (1697), Martinique, and Guadeloupe had broken the integrity of the closed Spanish mercantile system and established thriving sugar colonies.  
At the beginning of his reign, the first Spanish Bourbon, King Philip V, reorganized the government to strengthen the executive power of the monarch as was done in France, in place of the deliberative, Polysynodial System of Councils. 
Philip's government set up a ministry of the Navy and the Indies (1714) and established commercial companies, the Honduras Company (1714), a Caracas company, the Guipuzcoana Company (1728), and the most successful one, the Havana Company (1740).
In 1717–18, the structures for governing the Indies, the Consejo de Indias and the Casa de Contratación, which governed investments in the cumbersome Spanish treasure fleets, were transferred from Seville to Cadiz, where foreign merchant houses had easier access to the Indies trade.  Cadiz became the one port for all Indies trading (see flota system). Individual sailings at regular intervals were slow to displace the traditional armed convoys, but by the 1760s there were regular ships plying the Atlantic from Cadiz to Havana and Puerto Rico, and at longer intervals to the Río de la Plata, where an additional viceroyalty was created in 1776. The contraband trade that was the lifeblood of the Habsburg empire declined in proportion to registered shipping (a shipping registry having been established in 1735).
Two upheavals registered unease within Spanish America and at the same time demonstrated the renewed resiliency of the reformed system: the Tupac Amaru uprising in Peru in 1780 and the rebellion of the comuneros of New Granada, both in part reactions to tighter, more efficient control.
The 18th century was a century of prosperity for the overseas Spanish Empire as trade within grew steadily, particularly in the second half of the century, under the Bourbon reforms. Spain's victory in the Battle of Cartagena de Indias against a British expedition in the Caribbean port of Cartagena de Indias helped Spain secure its dominance of its possessions in America until the 19th century. But different regions fared differently under Bourbon rule, and even while New Spain was particularly prosperous, it was also marked by steep wealth inequality. Silver production boomed in New Spain during the 18th century, with output more than tripling between the start of the century and the 1750s. The economy and the population both grew, both centered around Mexico City. But while mine owners and the crown benefited from the flourishing silver economy, most of the population in the rural Bajío faced rising land prices, falling wages. Eviction of many from their lands resulted. 
With a Bourbon monarchy came a repertory of Bourbon mercantilist ideas based on a centralized state, put into effect in America slowly at first but with increasing momentum during the century. Shipping grew rapidly from the mid-1740s until the Seven Years' War (1756–63), reflecting in part the success of the Bourbons in bringing illicit trade under control. With the loosening of trade controls after the Seven Years' War, shipping trade within the empire once again began to expand, reaching an extraordinary rate of growth in the 1780s.
The end of Cadiz's monopoly of trade with America brought about a rebirth of Spanish manufactures. Most notable was the rapidly growing textile industry of Catalonia which by the mid-1780s saw the first signs of industrialization. This saw the emergence of a small, politically active commercial class in Barcelona. This isolated pocket of advanced economic development stood in stark contrast to the relative backwardness of most of the country. Most of the improvements were in and around some major coastal cities and the major islands such as Cuba, with its tobacco plantations, and a renewed growth of precious metals mining in America.
Agricultural productivity remained low despite efforts to introduce new techniques to what was for the most part an uninterested, exploited peasant and laboring groups. Governments were inconsistent in their policies. Though there were substantial improvements by the late 18th century, Spain was still an economic backwater. Under the mercantile trading arrangements it had difficulty in providing the goods being demanded by the strongly growing markets of its empire, and providing adequate outlets for the return trade.
From an opposing point of view according to the "backwardness" mentioned above the naturalist and explorer Alexander von Humboldt traveled extensively throughout the Spanish Americas, exploring and describing it for the first time from a modern scientific point of view between 1799 and 1804. In his work Political essay on the kingdom of New Spain containing researches relative to the geography of Mexico he says that the Indians of New Spain lived in better conditions than any Russian or German peasant in Europe.  According to Humboldt, despite the fact that Indian farmers were poor, under Spanish rule they were free and slavery was non-existent, their conditions were much better than any other peasant or farmer in the advanced Northern Europe. 
Humboldt also published a comparative analysis of bread and meat consumption in New Spain (México) compared to other cities in Europe such as Paris. Mexico City consumed 189 pounds of meat per person per year, in comparison to 163 pounds consumed by the inhabitants of Paris, the Mexicans also consumed almost the same amount of bread as any European city, with 363 kilograms of bread per person per year in comparison to the 377 kilograms consumed in Paris. Caracas consumed seven times more meat per person than in Paris. Von Humboldt also said that the average income in that period was four times the European income and also that the cities of New Spain were richer than many European cities. 
The Spanish empire had still not returned to first-rate power status, but it had recovered and even extended its territories considerably from the dark days at the beginning of the eighteenth century when it was, particularly in continental matters, at the mercy of other powers' political deals. The relatively more peaceful century under the new monarchy had allowed it to rebuild and start the long process of modernizing its institutions and economy, and the demographic decline of the 17th century had been reversed. It was a middle-ranking power with great power pretensions that could not be ignored. But time was to be against it.
Bourbon institutional reforms under Philip V bore fruit militarily when Spanish forces easily retook Naples and Sicily ( Battle of Bitonto) from the Austrians in 1734 during the War of the Polish Succession, and during the War of Jenkins' Ear (1739–42) thwarted British efforts to capture the strategic cities of Cartagena de Indias and Santiago de Cuba by defeating a massive British army and navy, although Spain's invasion of Georgia also failed.
In 1742, the War of Jenkins' Ear merged with the larger War of the Austrian Succession, and King George's War in North America. The British, also occupied with France, were unable to capture Spanish convoys, and Spanish privateers attacked British merchant shipping along the Triangle Trade routes. In Europe, Spain had been trying to divest Maria Theresa of Lombardy in northern Italy since 1741, but faced the opposition of Charles Emmanuel III of Sardinia, and warfare in northern Italy remained indecisive throughout the period up to 1746. By the 1748 Treaty of Aix-la-Chappelle, Spain gained Parma, Piacenza, and Guastalla in northern Italy.
Spain was defeated during the invasion of Portugal and lost both Havana and Manila to British forces towards the end of the Seven Years' War (1756–63).  However, it promptly recovered these losses and seized the British naval base in the Bahamas during the American Revolutionary War (1775–83). During most of the 18th century, Spanish privateers were the scourge of the Antilles, with Dutch, British, French and Danish vessels as their prizes.  In 1783 and 1784 the Spanish navy bombarded Algiers to end piracy in the Mediterranean. The second bombardment under Admiral Antonio Barceló damaged the city so severely that the Dey of Algiers negotiated a peace treaty.
Spain contributed to the independence of the thirteen American colonies (which formed the United States) together with France. Admiral Luis de Córdova y Córdova captured two British convoys totaling seventy-nine ships, including a fleet of fifty-five merchantmen and frigates in the action of 9 August 1780. The Spanish governor of Louisiana Bernardo de Gálvez launched several successful offensives against British Florida, capturing the entirety of West Florida from Britain. Spain and France were allies because of the Bourbon " Family Pact" carried out by both countries against Britain. Gálvez also conquered the island New Providence in the Bahamas. Jamaica was the last British stronghold of importance in the Caribbean. Gálvez attempted to organize an expedition to capture the island; however, the 1783 Peace of Paris was concluded and the invasion cancelled. Under royal order from Charles III of Spain Gálvez continued the aid operations to supply the American rebels.  The British blockaded the colonial ports of the Thirteen Colonies, and the route from Spanish-controlled New Orleans up to the Mississippi river was an effective alternative to supply the American rebels. Spain actively supported the thirteen colonies throughout the American Revolutionary War, beginning in 1776 by jointly funding Roderigue Hortalez and Company, a trading company that provided critical military supplies, throughout financing the final Siege of Yorktown in 1781 with a collection of gold and silver from Havana.  Spanish aid was supplied to the colonies via four main routes: from French ports with the funding of Roderigue Hortalez and Company; through the port of New Orleans and up the Mississippi river; from warehouses in Havana; and (4)from the northwestern Spanish port of Bilbao, through the Gardoqui family trading company which supplied significant war materiel. 
The majority of the territory of today's Brazil had been claimed as Spanish when exploration began with the navigation of the length of the Amazon River in 1541–42 by Francisco de Orellana. Many Spanish expeditions explored large parts of this vast region, especially those close to Spanish settlements. During the 16th and 17th centuries, Spanish soldiers, missionaries and adventurers also established pioneering communities, primarily in Paraná, Santa Catarina, and São Paulo, and forts on the northeastern coast threatened by the French and Dutch.
As Portuguese-Brazilian settlement expanded, following in the trail of the Bandeirantes exploits, these isolated Spanish groups were eventually integrated into Brazilian society. Only some Castilians who were displaced from the disputed areas of the Pampas of Rio Grande do Sul have left a significant influence on the formation of the gaucho, when they mixed with Indian groups, Portuguese and blacks who arrived in the region during the 18th century. The Spanish were barred by their laws from slaving of indigenous people, leaving them without a commercial interest deep in the interior of the Amazon basin. The Laws of Burgos (1512) and the New Laws (1542) had been intended to protect the interests of indigenous people. The Portuguese-Brazilian slavers, the Bandeirantes, had the advantage of access from the mouth of the Amazon River, which was on the Portuguese side of the line of Tordesillas. One famous attack upon a Spanish mission in 1628 resulted in the enslavement of about 60,000 indigenous people. [x]
In time, there was in effect a self-funding force of occupation. By the 18th century, much of the Spanish territory was under de facto control of Portuguese-Brazil. This reality was recognized with the legal transfer of sovereignty in 1750 of most of the Amazon basin and surrounding areas to Portugal in the Treaty of Madrid. This settlement sowed the seeds of the Guaraní War in 1756.
Spain claimed all of North America in the Age of Discovery, but claims were not translated into occupation until a major resource was discovered and Spanish settlement and crown rule put in place. The French had established an empire in northern North America and took some islands in the Caribbean. The English established colonies on the eastern seaboard of North America and in northern North America and some Caribbean islands as well. In the eighteenth century, the Spanish crown realized that its territorial claims needed to be defended, particularly in the wake of its visible weakness during the Seven Years' War when Britain captured the important Spanish ports of Havana and Manila. Another important factor was that the Russian empire had expanded into North America from the mid-eighteenth century, with fur trading settlements in what is now Alaska and forts as far south as Fort Ross, California. Great Britain was also expanding into areas that Spain claimed as its territory on the Pacific coast. Taking steps to shore up its fragile claims to California, Spain began planning California missions in 1769. Spain also began a series of voyages to the Pacific Northwest, where Russia and Great Britain were encroaching on claimed territory. The Spanish expeditions to the Pacific Northwest, with Alessandro Malaspina and others sailing for Spain, came too late for Spain to assert its sovereignty in the Pacific Northwest.  The Nootka Crisis (1789–1791) nearly brought Spain and Britain to war. It was a dispute over claims in the Pacific Northwest, where neither nation had established permanent settlements. The crisis could have led to war, but it was resolved in the Nootka Convention, in which Spain and Great Britain agreed to not establish settlements and allowed free access to Nootka Sound on the west coast of what is now Vancouver Island. In 1806 Baron Nikolai Rezanov attempted to negotiate a treaty between the Russian-American Company and the Viceroyalty of New Spain, but his unexpected death in 1807 ended any treaty hopes. Spain gave up its claims in the West of North America in the Adams-Onis Treaty of 1819, ceding its rights there to the United States, allowing the U.S. to purchase Florida, and establishing a boundary New Spain and the U.S. When the negotiations between the two nations were taking place, Spain's resources were stretched due to the Spanish American wars of independence. 
The growth of trade and wealth in the colonies caused increasing political tensions as frustration grew with the improving but still restrictive trade with Spain. Alessandro Malaspina's recommendation to turn the empire into a looser confederation to help improve governance and trade so as to quell the growing political tensions between the élites of the empire's periphery and center was suppressed by a monarchy afraid of losing control. All was to be swept away by the tumult that was to overtake Europe at the turn of the 19th century with the French Revolutionary and Napoleonic Wars.
The first major territory Spain was to lose in the 19th century was the vast Louisiana Territory, which had few European settlers. It stretched north to Canada and was ceded by France in 1763 under the terms of the Treaty of Fontainebleau. The French, under Napoleon, took back possession as part of the Treaty of San Ildefonso in 1800 and sold it to the United States in the Louisiana Purchase of 1803. Napoleon's sale of the Louisiana Territory to the United States in 1803 caused border disputes between the United States and Spain that, with rebellions in West Florida (1810) and in the remainder of Louisiana at the mouth of the Mississippi, led to their eventual cession to the United States.
The British attempted to seize the Viceroyalty of the Río de la Plata in 1806. The Spanish viceroy retreated hastily to the hills when defeated by a small British force. However, the Criollos' militias and colonial army eventually repulsed the British. The later intrusion of Napoleonic forces into Spain in 1808 cut off the effective connection with the overseas components of the empire. A combination of internal and external factors led to the unforeseen and not inevitable loss of most of Spain's empire in Spanish America during the Spanish American wars of independence.
Spain was caught up in European events of the Napoleonic era that led to its loss of empire in Spanish America. Spain was France's ally, but it had tried to avoid being drawn directly into the ongoing conflict between Napoleon's France and Britain. War broke out in 1804 after a British squadron captured a Spanish convoy off Cape Santa Maria, Portugal. The British navy defeated the Spanish navy in the Battle of Trafalgar in 1805, with Spain losing most of its fleet. In 1808, the Spanish king was tricked and Spain was taken over by Napoleon without firing a shot, but the French provoked a popular uprising from the Spanish people and the grinding guerrilla warfare, which Napoleon dubbed his "ulcer,"  the Peninsular War, (famously depicted by the painter Goya) ensued. [y]
The Napoleonic invasion provoked a crisis of sovereignty and legitimacy to rule, a new political framework, and the loss of most of Spanish America. In Spain, political uncertainty lasted over a decade and turmoil for several decades, civil wars on succession disputes, a republic, and finally a liberal democracy. Resistance coalesced around juntas, emergency ad hoc governments. A Supreme Central Junta, ruling in the name of Ferdinand VII, was created on 25 September 1808 to coordinate efforts among the various juntas. Subsequently, a cortes or parliament was called, with representatives not only from Spain, but also Spanish America and the Philippines. In 1812, the Cortes of Cádiz drafted the Spanish Constitution of 1812. When Ferdinand VII was restored to the throne in 1814, he repudiated the constitution and re-asserted absolutist rule. A military coup in 1820 led by Rafael del Riego forced Ferdinand to accept the constitution again, which went back into force until Ferdinand raised troops in 1823, and re-asserted absolutist rule again.  The reinstatement of the constitution was a major factor in propelling New Spain's elites to support independence in 1821.
The idea of a separate identity for Spanish America has been developed in the modern historical literature,  but the idea of complete Spanish American independence from the Spanish Empire was not general at the time and political independence was not inevitable. Historian Brian Hamnett argues that had the Spanish monarchy and Spanish liberals been more flexible regarding the place of the overseas components, that the empire would not have collapsed.  Juntas emerged in Spanish America as Spain faced a political crisis due to the invasion and occupation by Napoleon Bonaparte and abdication of Ferdinand VII. Spanish Americans reacted in much the same way the Peninsular Spanish did, legitimizing their actions through traditional law, which held that sovereignty reverted to the people in the absence of a legitimate king.
The majority of Spanish Americans continued to support the idea of maintaining a monarchy, but did not support retaining absolute monarchy under Ferdinand VII.  Spanish Americans wanted self-government. The juntas in the Americas did not accept the governments of the Europeans – neither the government set up for Spain by the French nor the various Spanish governments set up in response to the French invasion. The juntas did not accept the Spanish regency, isolated under siege in the city of Cadiz (1810–1812). They also rejected the Spanish Constitution of 1812 although the Constitution gave Spanish citizenship to those in the territories that had belonged to the Spanish monarchy in both hemispheres.  The liberal Spanish Constitution of 1812 recognized indigenous peoples of the Americas as Spanish citizens. But the acquisition of citizenship for any casta of Afro-American peoples of the Americas was through naturalization – excluding slaves.
A long period of wars followed in America from 1811 to 1829, and the lack of Spanish troops in the colonies led to civil war between patriotic rebels and local Royalists. In South America this period of wars led to the independence of Argentina (1810), Venezuela (1810), Chile (1810), Paraguay (1811) and Uruguay (1815, but subsequently ruled by Brazil until 1828). José de San Martín campaigned for independence in Chile (1818) and in Peru (1821). Further north, Simón Bolívar led forces that won independence between 1811 and 1826 for the area that became Venezuela, Colombia, Ecuador, Perú and Bolivia (then Alto Perú). Panama declared independence in 1821 and merged with the Republic of Gran Colombia (from 1821 to 1903).
In the Viceroyalty of New Spain, Miguel Hidalgo declared Mexican independence in 1810 in the Grito de Dolores. Independence was actually won in 1821 by a royalist army officer turned insurgent, Agustín de Iturbide, in alliance with insurgent Vicente Guerrero and under the Plan of Iguala. The conservative Catholic hierarchy in New Spain supported Mexican independence largely because it found the liberal Spanish Constitution of 1812 abhorrent. Central America provinces became independent via Mexico's independence in 1821 and joined Mexico for a brief time (1822–23), but they chose their own path when Mexico became a republic in 1824.
The Spanish coastal fortifications in Veracruz, Callao and Chiloé were the footholds that resisted until 1825 and 1826 respectively. In Spanish America, Royalist guerrillas continued the war in several countries, and Spain launched attempts to retake Venezuela in 1827 and Mexico in 1829. Spain abandoned all plans of military re-conquest at the death of King Ferdinand VII in 1833. Finally the Spanish government went so far as to renounce sovereignty over all of continental America in 1836.
Santo Domingo likewise declared independence in 1821 and began negotiating for inclusion in Bolivar's Republic of Gran Colombia, but was quickly occupied by Haiti, which ruled it until an 1844 revolution. After 17 years of independence, in 1861, Santo Domingo was again made a colony due to Haitian aggression. It was the only time that a Spanish colonial possession would return to Spain after having gained independence. By 1862, Spain was contending with a limited insurgency and losing hundreds of soldiers to guerrillas and the devastation of yellow fever.  A major uprising began in earnest in August 1863, motivated by the Spanish government's attempts to impose strict Catholicism and the Castilianization of most government and military positions.  In September 1863, the Spanish garrison of Santiago abandoned the city and marched to Puerto Plata, harassed by Dominicans all the way. There they joined the garrison in the fort, leaving the city to be pillaged by the rebels. Eventually 600 Spanish sallied out, and after a severe fight, drove off the rebels with help from the cannon of the fort, but by then the city had been plundered and burnt almost out of existence. The damage to Santiago and Puerto Plata was estimated at $5,000,000. 
During the Dominican Restoration War, the Dominican leadership had changed frequently, only to be deposed in coups for corruption, politics or in the case of Gaspar Polanco (who lasted 3 months) leading a disastrous direct attack on the Spanish at Monte Cristi in December 1864. Thus by the end of 1864, it could be said the Spanish were winning. However, military victory was trumped by political defeat. The price of war in terms of money and lives had been huge, disease and the hardy guerrilla fighters of the island causing many casualties that Spain could ill afford, and in 1865, the Bourbon Queen Isabella II signed a decree annulling the annexation.
An increasing level of nationalist, anti-colonial uprisings in Cuba ( Cuban War of Independence) and the Philippine Islands ( Philippine Revolution) culminated with the Spanish–American War of 1898. Military defeat was followed by the U.S. occupation of Cuba and the cession of Puerto Rico, Guam, and the Philippines to the United States, receiving US$20 million in compensation for the Philippines.  The following year, Spain then sold its remaining Pacific Ocean possessions to Germany in the German–Spanish Treaty, retaining only its African territories. On 2 June 1899, the second expeditionary battalion Cazadores of Philippines, the last Spanish garrison in the Philippines, which had been besieged in Baler, Aurora at war's end, was pulled out, effectively ending around 300 years of Spanish hegemony in the archipelago. 
By the end of the 17th century, only Melilla, Alhucemas, Peñón de Vélez de la Gomera (which had been taken again in 1564), Ceuta (part of the Portuguese Empire since 1415, had chosen to retain its links to Spain once the Iberian Union ended; the formal allegiance of Ceuta to Spain was recognized by the Treaty of Lisbon in 1668), Oran and Mers El Kébir remained as Spanish territory in Africa. The latter cities were lost in 1708, reconquered in 1732 and sold by Charles IV in 1792.
In 1778, Fernando Poo Island (now Bioko), adjacent islets, and commercial rights to the mainland between the Niger and Ogooué Rivers were ceded to Spain by the Portuguese in exchange for territory in South America ( Treaty of El Pardo). In the 19th century, some Spanish explorers and missionaries would cross this zone, among them Manuel Iradier.
In 1848, Spanish troops conquered the Islas Chafarinas.
In 1860, after the Tetuan War, Morocco ceded Sidi Ifni to Spain as a part of the Treaty of Tangiers, on the basis of the old outpost of Santa Cruz de la Mar Pequeña, thought to be Sidi Ifni. The following decades of Franco-Spanish collaboration resulted in the establishment and extension of Spanish protectorates south of the city, and Spanish influence obtained international recognition in the Berlin Conference of 1884: Spain administered Sidi Ifni and Western Sahara jointly. Spain claimed a protectorate over the coast of Guinea from Cape Bojador to Cap Blanc, too, and even try to press a claim over the Adrar and Tiris regions in Mauritania. Río Muni became a protectorate in 1885 and a colony in 1900. Conflicting claims to the Guinea mainland were settled in 1900 by the Treaty of Paris, because of which Spain was left with a mere 26,000 km2 out of the 300,000 stretching east to the Ubangi River which they initially claimed. 
Following a brief war in 1893, Spain expanded its influence south from Melilla.
In 1911, Morocco was divided between the French and Spanish. The Rif Berbers rebelled, led by Abdelkrim, a former officer for the Spanish administration. The Battle of Annual (1921) during the Rif War was a sudden, grave, and almost fatal military defeat suffered by the Spanish army against Moroccan insurgents. A leading Spanish politician emphatically declared: "We are at the most acute period of Spanish decadence".  After the disaster of Annual, the Alhucemas landing took place in September 1925 at the bay of Alhucemas. The Spanish Army and Navy with a small collaboration of an allied French contingent put an end to the Rif War. It is considered the first successful amphibious landing in history supported by seaborne air power and tanks. 
In 1926 Bioko and Rio Muni were united as the colony of Spanish Guinea, a status that would last until 1959. In 1931, following the fall of the monarchy, the African colonies became part of the Second Spanish Republic. In 1934, during the government of Prime Minister Alejandro Lerroux, Spanish troops led by General Osvaldo Capaz landed in Sidi Ifni and carried out the occupation of the territory, ceded de jure by Morocco in 1860. Five years later, Francisco Franco, a general of the Army of Africa, rebelled against the republican government and started the Spanish Civil War (1936–39). During the Second World War the Vichy French presence in Tangier was overcome by that of Francoist Spain.
Spain lacked the wealth and the interest to develop an extensive economic infrastructure in its African colonies during the first half of the 20th century. However, through a paternalistic system, particularly on Bioko Island, Spain developed large cocoa plantations for which thousands of Nigerian workers were imported as laborers.
In 1956, when French Morocco became independent, Spain surrendered Spanish Morocco to the new nation, but retained control of Sidi Ifni, the Tarfaya region and Spanish Sahara. Moroccan Sultan (later King) Mohammed V was interested in these territories and invaded Spanish Sahara in 1957, in the Ifni War, or in Spain, the Forgotten War (la Guerra Olvidada). In 1958, Spain ceded Tarfaya to Mohammed V and joined the previously separate districts of Saguia el-Hamra (in the north) and Río de Oro (in the south) to form the province of Spanish Sahara.
In 1959, the Spanish territory on the Gulf of Guinea was established with a status similar to the provinces of metropolitan Spain. As the Spanish Equatorial Region, it was ruled by a governor general exercising military and civilian powers. The first local elections were held in 1959, and the first Equatoguinean representatives were seated in the Spanish parliament. Under the Basic Law of December 1963, limited autonomy was authorized under a joint legislative body for the territory's two provinces. The name of the country was changed to Equatorial Guinea. In March 1968, under pressure from Equatoguinean nationalists and the United Nations, Spain announced that it would grant the country independence.
In 1969, under international pressure, Spain returned Sidi Ifni to Morocco. Spanish control of Spanish Sahara endured until the 1975 Green March prompted a withdrawal, under Moroccan military pressure. The future of this former Spanish colony remains uncertain.
Morocco still claims Ceuta, Melilla, and plazas de soberanía even though they are internationally recognized as administrative divisions of Spain. Isla Perejil was occupied on 11 July 2002 by Moroccan Gendarmerie and troops, who were evicted by Spanish naval forces in a bloodless operation.
This section needs additional citations for verification. (November 2020)
Although the Spanish Empire declined from its apogee in the middle seventeenth century, it remained a wonder for other Europeans for its sheer geographical span. Writing in 1738, English poet Samuel Johnson questioned, "Has heaven reserved, in pity to the poor,/No pathless waste or undiscovered shore,/No secret island in the boundless main,/No peaceful desert yet unclaimed by Spain?" 
The Spanish Empire left a huge linguistic, religious, political, cultural, and urban architectural legacy in the Western Hemisphere. With over 470 million native speakers today, Spanish is the second most spoken native language in the world, as result of the introduction of the language of Castile—Castilian, "Castellano" —from Iberia to Spanish America, later expanded by the governments of successor independent republics. In the Philippines, the Spanish–American War (1898) brought the islands under U.S. jurisdiction, with English being imposed in schools and Spanish becoming a secondary official language.
An important cultural legacy of the Spanish empire overseas is Roman Catholicism, which remains the main religious faith in Spanish America and the Philippines. Christian evangelization of indigenous peoples was a key responsibility of the crown and a justification for its imperial expansion. Although indigenous were considered neophytes and insufficiently mature in their faith for indigenous men to be ordained to the priesthood, the indigenous were part of the Catholic community of faith. Catholic orthodoxy enforced by the Inquisition, particularly targeting crypto-Jews and Protestants. Not until after their independence in the nineteenth century did Spanish American republics allow religious toleration of other faiths. Observances of Catholic holidays often have strong regional expressions and remain important in many parts of Spanish America. Observances include Day of the Dead, Carnival, Holy Week, Corpus Christi, Epiphany, and national saints' days, such as the Virgin of Guadalupe in Mexico.
Politically, the colonial era has strongly influenced modern Spanish America. The territorial divisions of the empire in Spanish America became the basis for boundaries between new republics after independence and for state divisions within countries. It is often argued that the rise of caudillismo during and after Latin American independence movements created a legacy of authoritarianism in the region.  There was no significant development of representative institutions during the colonial era, and the executive power was often made stronger than the legislative power during the national period as a result. Unfortunately, this has led to a popular misconception that the colonial legacy has caused the region to have an extremely oppressed proletariat. Revolts and riots are often seen as evidence of this supposed extreme oppression. However, the culture of revolting against an unpopular government is not simply a confirmation of widespread authoritarianism. The colonial legacy did leave a political culture of revolt, but not always as a desperate last act. The civil unrest of the region is seen by some as a form of political involvement. While the political context of the political revolutions in Spanish America is understood to be one in which liberal elites competed to form new national political structures, so too were those elites responding to mass lower-class political mobilization and participation. 
Hundreds of towns and cities in the Americas were founded during the Spanish rule, with the colonial centers and buildings of many of them now designated as UNESCO World Heritage Sites attracting tourists. The tangible heritage includes universities, forts, cities, cathedrals, schools, hospitals, missions, government buildings and colonial residences, many of which still stand today. A number of present-day roads, canals, ports or bridges sit where Spanish engineers built them centuries ago. The oldest universities in the Americas were founded by Spanish scholars and Catholic missionaries. The Spanish Empire also left a vast cultural and linguistic legacy. The cultural legacy is also present in the music, cuisine, and fashion, some of which have been granted the status of UNESCO Intangible Cultural Heritage.[ citation needed]
The long colonial period in Spanish America resulted in a mixing of indigenous peoples, Europeans, and Africans that were classified by race and hierarchically ranked, which created a markedly different society than the European colonies of North America.[ citation needed] In concert with the Portuguese, the Spanish Empire laid the foundations of a truly global trade by opening up the great trans-oceanic trade routes and the exploration of unknown territories and oceans for the western knowledge. The Spanish dollar became the world's first global currency.[ citation needed]
One of the features of this trade was the exchange of a great array of domesticated plants and animals between the Old World and the New in the Columbian Exchange. Some cultivars that were introduced to America included grapes, wheat, barley, apples and citrous fruits; animals that were introduced to the New World were horses, donkeys, cattle, sheep, goats, pigs, and chickens. The Old World received from America such things as maize, potatoes, chili peppers, tomatoes, tobacco, beans, squash, cacao (chocolate), vanilla, avocados, pineapples, chewing gum, rubber, peanuts, cashews, Brazil nuts, pecans, blueberries, strawberries, quinoa, amaranth, chia, agave and others. The result of these exchanges was to significantly improve the agricultural potential of not only in America, but also that of Europe and Asia. Diseases brought by Europeans and Africans, such as smallpox, measles, typhus, and others, devastated almost all indigenous populations that had no immunity, with syphilis the exchange from the New World to Old.[ citation needed]
There were also cultural influences, which can be seen in everything from architecture to food, music, art and law, from Southern Argentina and Chile to the United States of America together with the Philippines. The complex origins and contacts of different peoples resulted in cultural influences coming together in the varied forms so evident today in the former colonial areas.[ citation needed]
- Black legend (Spain)
- Cartography of Latin America
- Creole nationalism
- Governor-General of the Philippines
- Historiography of Colonial Spanish America
- History of Spain
- History of the Americas
- List of countries that gained independence from Spain
- List of oldest buildings in the Americas
- Society in the Spanish Colonial Americas
- Spanish Colonial architecture
- Spanish Viceroys of Aragon
- Spanish Viceroys of Catalonia
- Spanish Viceroys of Naples
- Spanish Viceroys of Navarre
- Spanish Viceroys of Sardinia
- Spanish Viceroys of Sicily
- Spanish Viceroys of Valencia
- Viceroys of New Granada
- Viceroys of New Spain
- Viceroys of Peru
- Viceroys of Río de la Plata
- de facto; de jure since 1561, Valladolid between 1601 to 1606
- The Catholic Church was the State religion of the Spanish (European (White)) Empire, but the following religions were also present in the empire: Islam ( Sunni Islam (Hanafi school ) Shia Islam, Crypto-Islam), Aztec religions, Inca religions, Buddhism, Hinduism, Sikhism, Jainism, Animism and Judaism ( Crypto-Judaism).
- ... In August, the Duke besieged Ceuta [The city was simultaneously besieged by the moors and a Castilian army led by the Duke of Medina Sidónia] and took the whole city except the citadel, but with the arrival of Afonso V in the same fleet which led him to France, he preferred to leave the square. As a consequence, this was the end of the attempted settlement of Gibraltar by converts from Judaism ... which D. Enrique de Guzmán had allowed in 1474, since he blamed them for the disaster. See Ladero Quesada, Miguel Ángel (2000), " Portugueses en la frontera de Granada" in En la España Medieval, vol. 23 (in Spanish), p. 98, ISSN 0214-3038.
- A dominated Ceuta by the Castilians would certainly have forced a share of the right to conquer the Kingdom of Fez (Morocco) between Portugal and Castile instead of the Portuguese monopoly recognized by the treaty of Alcáçovas. See Coca Castañer (2004), " El papel de Granada en las relaciones castellano-portuguesas (1369–1492)", in Espacio, tiempo y forma (in Spanish), Serie III, Historia Medieval, tome 17, p. 350: ... In that summer, D. Enrique de Guzmán crossed the Strait with five thousand men to conquer Ceuta, managing to occupy part of the urban area on the first thrust, but knowing that the Portuguese King was coming with reinforcements to the besieged [Portuguese], he decided to withdraw ...
- A Castilian fleet attacked the Praia's Bay in Terceira Island but the landing forces were decimated by a Portuguese counter-attack because the rowers panicked and fled with the boats. See chronicler Frutuoso, Gaspar (1963)- Saudades da Terra (in Portuguese), Edição do Instituto Cultural de Ponta Delgada, volume 6, chapter I, p. 10. See also Cordeiro, António (1717)- Historia Insulana (in Portuguese), Book VI, Chapter VI, p. 257
- This attack happened during the Castilian war of Succession. See Leite, José Guilherme Reis- Inventário do Património Imóvel dos Açores Breve esboço sobre a História da Praia (in Portuguese).
- This was a decisive battle because after it, in spite of the Catholic Monarchs' attempts, they were unable to send new fleets to Guinea, Canary or to any part of the Portuguese empire until the end of the war. The Perfect Prince sent an order to drown any Castilian crew captured in Guinea waters. Even the Castilian navies which left to Guinea before the signature of the peace treaty had to pay the tax ("quinto") to the Portuguese crown when returned to Castile after the peace treaty. Isabella had to ask permission to Afonso V so that this tax could be paid in Castilian harbors. Naturally all this caused a grudge against the Catholic Monarchs in Andalusia.
- Other European powers did not see the treaty between Castile and Portugal as binding on themselves. Francis I of France observed "The sun shines for me as for others and I should very much like to see the clause in Adam's will that excludes me from a share of the world." 
- Much of Charles's reign was taken up by conflicts with France, which found itself encircled by Charles's empire while it still maintained ambitions in Italy. The first war with Charles's great nemesis King Francis I of France began in 1521. The war was a disaster for France, which suffered defeat in the Battle of Bicocca (1522), the Battle of Pavia (1525), in which Francis I was captured and imprisoned in Madrid,  and in the Battle of Landriano (1529) before Francis relented and abandoned Milan to the Empire. Charles later gave the imperial fief of Milan to his Spanish son Philip and the territory was administered by Castilian governors. Pope Clement VII joined forces with France and prominent Italian states against the Habsburg Emperor, resulting in the War of the League of Cognac (1526–30). Charles's sack of Rome (1527) and virtual imprisonment of Pope Clement VII in 1527 prevented the Pope from annulling the marriage of Henry VIII of England and Charles's aunt Catherine of Aragon, so Henry eventually broke with Rome, thus leading to the English Reformation. In other respects, the war was inconclusive. A third war erupted in 1535, when, following the death of the last Sforza Duke of Milan, Charles installed his own son, Philip, in the duchy, despite Francis's claims on it. Francis failed to conquer Milan, but succeeded in conquering most of the lands of Charles's ally the Duke of Savoy, including his capital, Turin. The crowns of Castile and Aragon depended on Genoese bankers for its finances and the Genoese fleet aided the Spanish in fighting the Ottomans in the Mediterranean. 
- By the 16th century, the Ottomans had become a threat to the states of Western Europe. They had defeated the eastern Christian Byzantine empire and seized its capital, creating it as the Ottoman capital and the Ottomans controlled a rich area of the eastern Mediterranean, with links to Asia, Egypt, and India and in by the mid-sixteenth century, they ruled a third of Europe. The Ottomans had created an impressive land and maritime empire, with port cities and short and long range trade connections.  Charles's great rival was Suleiman the Magnificent, whose rule almost exactly coincided with Charles's. A contemporary Spanish writer, Francisco López de Gómara, compared Charles unfavorably with Suleiman in the 1540s, saying that although both were rich and pursued war, "the Turks succeeded better at fulfilling their projects than did the Spanish; they devoted themselves more fully to the order and discipline of war, they were better advised, they used their money more effectively."  The regular Ottoman fleet came to dominate the Eastern Mediterranean after its victory at Preveza in 1538 and the loss of Djerba in 1560 (shortly after Charles' death) which severely decimated the Spanish marine arm. At the same time, Ottoman corsairs regularly devastated the Spanish and Italian coasts, crippling Spanish trade and chipping at the foundations of Habsburg power. In 1543, Francis I of France announced his unprecedented alliance with the Islamic sultan of the Ottoman Empire, Suleiman the Magnificent, by occupying the Spanish-controlled city of Nice in concert with Ottoman Turk forces. Henry VIII of England, who bore a greater grudge against France than he held against Charles for standing in the way of his divorce, joined him in his invasion of France. Although the Spanish were defeated at the Battle of Ceresole in Savoy, the French army was unable to seriously threaten Spanish-controlled Milan, while suffering defeat in the north at the hands of Henry, thereby being forced to accept unfavorable terms. The Austrians, led by Charles's younger brother Ferdinand, continued to fight the Ottomans in the east. The presence of Spain in North Africa declined during Charles's reign, though Tunis and its port, La Goleta, were taken in 1535. One after another, most of the Spanish possessions were lost: Peñón de Vélez de la Gomera (1522), Santa Cruz de Mar Pequeña (1524), Algiers (1529), Tripoli (1551), and Bougie (1555).
- The Schmalkaldic League had allied itself to the French, and efforts in Germany to undermine the League had been rebuffed. Francis's defeat in 1544 led to the annulment of the alliance with the Protestants, and Charles took advantage of the opportunity. He first tried the path of negotiation at the Council of Trent in 1545, but the Protestant leadership, feeling betrayed by the stance taken by the Catholics at the council, went to war, led by the Saxon elector Maurice. In response, Charles invaded Germany at the head of a mixed Dutch–Spanish army, hoping to restore the Imperial authority. The emperor personally inflicted a decisive defeat on the Protestants at the historic Battle of Mühlberg in 1547. In 1555, Charles signed the Peace of Augsburg with the Protestant states and restored stability in Germany on his principle of cuius regio, eius religio, a position unpopular with Spanish and Italian clergymen. Charles's involvement in Germany would establish a role for Spain as protector of the Catholic, Habsburg cause in the Holy Roman Empire; the precedent would lead, seven decades later, to involvement in the war that would decisively end Spain as Europe's leading power.
- The battle ended the threat of Ottoman naval hegemony in the Mediterranean. The victory was aided by the participation of various military leaders and contingents from parts of Italy under Philip's rule. German soldiers took part in the capture of Peñón del Vélez in North Africa in 1564. By 1575, German soldiers were three-quarters of Philip's troops. 
- According to Luc-Normand Tellier, "It is estimated that the port of Antwerp was earning the Spanish crown seven times more revenues than the Americas." 
- The Duke of Alba's Spanish army defeated the Portuguese at the Battle of Alcântara on 25 August 1580, and Alba conquered the capital of Lisbon two days later. In 1582, Álvaro de Bazán assembled an armada against the Azores and in July sailed from Lisbon. Filippo di Piero Strozzi, a Florentine mercenary, clashed with Bazán at the Battle of Ponta Delgada, off the island of São Miguel, but was defeated and killed. In 1583, Bazán returned with an invasion force and conquered Terceira. Triumphant, he suggested that he invade England with a 500-ship, 94,000-man armada, but Philip shelved the suggestion. 
- In Portugal, the Duke of Alba and the Spanish occupation were little more popular in Lisbon than in Rotterdam. The combined Spanish and Portuguese empires placed into Philip's hands included almost the entirety of the explored New World along with a vast trading empire in Africa and Asia. In 1582, when Philip II moved his court back to Madrid from the Atlantic port of Lisbon, where he had temporarily settled to pacify his new Portuguese kingdom, the pattern was sealed, in spite of what every observant commentator privately noted. "Sea power is more important to the ruler of Spain than any other prince", wrote one commentator, "for it is only by sea power that a single community can be created out of so many so far apart." A writer on tactics in 1638 observed, "The might most suited to the arms of Spain is that which is placed on the seas, but this matter of state is so well known that I should not discuss it, even if I thought it opportune to do so."  Portugal and her kingdoms, including Brazil and her African colonies, were under the dominion of the Spanish monarch.
- Paul Kennedy points out that the very reliance on such a narrow tax base was a major problem for Spanish finances in the long term. See Kennedy 2017, p. 65.
- Castile provided the Spanish crown with most of its revenues and its best troops.  [p] The plague devastated Castilian lands between 1596 and 1602, causing the deaths of some 600,000 people.  A great number of Castilians went to America or died on Dutch and German battlefields. In 1609, the great majority of the Morisco population of Spain (much more numerous and unassimilated in the kingdoms of Valencia and Aragon, than in the Crown of Castile or the Principality of Catalonia) was expelled. It is estimated that Castile lost about 25% of its population between 1600 and 1623. Such a dramatic drop in the population meant the basis for the Crown's revenues was dangerously weakened in a time when it was engaged in continuous conflict in Europe. 
- Peace with England and France gave Spain an opportunity to focus its energies on restoring its rule to the Dutch provinces. The Dutch, led by Maurice of Nassau, the son of William the Silent and perhaps the greatest strategist of his time, had succeeded in taking a number of border cities since 1590, including the fortress of Breda. However, the Genoese nobleman Ambrogio Spinola, commanding an army of mercenary Italian troops, fought in the name of Spain and repeatedly defeated the Dutchmen. He was prevented from conquering the Netherlands only by Spain's latest bankruptcy in 1607.
- The Dutch were religiously tolerant and not evangelical, focusing on trade, as opposed to Spain's longstanding defense of Catholicism. A Dutch proverb says, "Christ is good; trade is better!" 
- The Union of Arms was the sparking point for a major revolt in Catalonia in 1640. This turmoil also seemed a propitious moment for the Portuguese to revolt against Habsburg rule, with the Duke of Braganza proclaimed as John IV of Portugal.  When John died in 1656, the Spanish attempted to wrest Portugal from his son Alfonso VI of Portugal but were defeated by Anglo-Portuguese forces at the Battle of Ameixial (1663) and the Battle of Montes Claros (1665), leading to Spain's recognition of Portugal's independence in 1668, during the regency of Philip IV's young heir, Charles II, who was seven at the time.
- The Habsburgs had been debasing their currency to pay for the war and prices exploded, just as they had in previous years in Austria. Until 1631, parts of Castile operated on a barter economy owing to the currency crisis, and the government was unable to collect any meaningful taxes from the peasantry and had to depend on revenue from its colonies. The Spanish armies, like others in German territories, resorted to "paying themselves" on the land. Olivares had backed certain taxation reforms in Spain pending the end of the war, but was blamed for another fruitless war in northern Italy.
- Although France suffered from a civil war from 1648 to 1652, Spain had been exhausted by the Thirty Years' War and the ongoing revolts. With the war against the United Provinces at an end in 1648, the Spanish drove the French out of Catalonia in 1652, recaptured Dunkirk (Spain's North Sea privateer base), and occupied Rocroi from 1653 to 1659. The war came to an end soon after the Battle of the Dunes, where a combined Anglo-French force retook Dunkirk.
- Spain suffered utter decay and stagnation during the final decades of the seventeenth century. While the rest of Western Europe went through exciting changes in government and society – the Glorious Revolution in England and the reign of the Sun King in France – Spain remained adrift. The Spanish bureaucracy that had built up around the charismatic, industrious, and intelligent Charles I and Philip II demanded a strong and hardworking monarch; the weakness and lack of interest of Philip III and Philip IV contributed to Spain's decay.
- An early bandeira in 1628, (led by Antônio Raposo Tavares), composed of 2,000 allied Indians, 900 Mamluks ( Mestizos) and 69 white Paulistanos, to find precious metals and stones and/or to capture Indians for slavery. This expedition alone was responsible for the destruction of most of the Jesuit missions of Spanish Guairá and the enslavement of 60,000 indigenous people. In response the missions that followed were heavily fortified.
- In 1806, Spain adhered to Napoleon's Continental System, to block trade with any enemy of France. Napoleon sought greater control of the peninsula and in October 1807, Napoleon's troops transited northern Spain with 28,000 men in the invasion of Portugal, Britain's ally. Charles IV signed the Treaty of Fountainebleau with Napoleon, ratifying that action and promising that Portugal would be divided between the two. Some 25,000 Spanish troops joined the invasion. The Portuguese royal family and the court fled Portugal on 29 November 1807 for its colony of Brazil, with the aid of the British navy. Charles IV's bargain with Napoleon soured, and the huge French army was now occupying Spain itself. In mid-March 1808, a two-day riot broke out in Aranjuez against Charles and his prime minister Manuel Godoy. Charles's son and legitimate heir Ferdinand led the opposition to his father, since he and his supporters believed that the dynasty was crumbling at the top.  Following the riot, Ferdinand forced his father's abdication on 19 March. On 23 March, a large French force entered the capital Madrid. Ferdinand returned to Madrid from Aranjuez on 24 March, but French troops now occupied the city. Ferdinand naively accepted Napoleon's invitation to Bayonne, France; Ferdinand left a small junta to rule in what he thought would be a short absence. Instead, Napoleon put Ferdinand under house arrest. The populace of Madrid rose up on 2 May 1808 and was met by fierce repression of the occupying French army. Napoleon forced Ferdinand to abdicate on 6 May. On 6 June 1808, Napoleon's older brother Joseph Bonaparte was crowned king of Spain. There was some support for Joseph I by Spanish reformers, but the opposition to him included elite Spanish interest groups as well as provincial elites and ordinary Spaniards. Spanish provinces asserted local political and military power against Madrid, and set up juntas. Large-spread guerrilla warfare broke out, and the Peninsular War drained France's military strength. Spanish guerrillas inflicted heavy losses on Imperial troops. 
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- Ocker, Printy, Starenko & Wallace, “Politics and Reformations: Communities, Politics, Nations, and Empires”, Brill Academic Publishers (2007), 495. “Charles V’s empire, encompassing much of western Europe and the Americas “was the nearest the post-classical world would come to seeing a truly world-wide monarchy, and hence the closest approximation to universal imperium” since the Roman Empire. It was envisaged by its supporters as a world empire that could be religiously inclusive”
- Levene, Ricardo (1951), Las Indias no eran colonias, Madrid. "On 2 October 1948, the Argentine National Academy of History debated the proposal put forward by its president whereby he “suggested that the authors of works of research, abstracts or texts on history of the Americas and of Argentina, substitute the expression ‘colonial period’ for ‘period of Spanish rule and civilization,’" among others. Finally, the proposal was accepted, with Ravignani's dissenting opinion, although the expression ‘Hispanic period’ was favored to the one originally put forward. The minutes are transcribed at the end of Levene (1951) 153–156."
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- The Canary's campaign:
Alfonso de Palencia,
Decada IV, Book XXXI, Chapters VIII and IX ("preparation of 2 fleets" [to Guinea and to Canary, respectively] "so that with them King Ferdinand crush its enemies" [the Portuguese] ...). Palencia wrote that the conquest of Gran Canary was a secondary goal to facilitate the expeditions to Guinea (the real goal), a means to an end.
- Alfonso de Palencia, Decada IV, book XXXII, chapter III: in 1478 a Portuguese fleet intercepted the armada of 25 navies sent by Ferdinand to conquer Gran Canary – capturing 5 of its navies plus 200 Castilians – and forced it to fled hastily and definitively from the Canary waters. This victory allowed Prince John to use the Canary Islands as an "exchange coin" in the peace treaty of Alcáçovas.
- Pulgar, Hernando del (1780), Crónica de los señores reyes católicos Don Fernando y Doña Isabel de Castilla y de Aragon (in Spanish), chapters LXXVI and LXXXVIII ("How the Portuguese fleet defeated the Castilian fleet which had come to the Mine of Gold"). From the Biblioteca Virtual Miguel de Cervantes.
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... For four years the Castilians traded and fought; but the Portuguese were the stronger. They defeated a large Spanish fleet off Guinea in 1478, besides gaining other victories. The war ended in 1479 by Ferdinand resigning his claims to Guinea ...
- ... More important, Castile recognized Portugal as the sole proprietor of the Atlantic islands (excepting the Canaries) and of the African coast in the Treaty of Alcáçovas in 1479. This Treaty clause, secured by Portuguese naval successes off Africa during an otherwise unsuccessful war, eliminated the only serious rival. In Richardson, Patrick, The expansion of Europe, 1400–1660 (1966), Longmans, p. 48
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- ... the Treaty of Alcáçovas was an important step in defining the expansion areas of each kingdom ... The Portuguese triumph in this agreement is evident, and in addition deserved. Efforts and perseverance developed over the last four decades by Henry the Navigator during the Discoveries in Africa reached their fair reward. In Donat, Luis Rojas (2002), España y Portugal ante los otros: derecho, religión y política en el descubrimiento medieval de América (in Spanish), Ediciones Universidad del Bio-Bio, p. 88, ISBN 9567813191
- ... Castile undertakes not to allow any his subject navigate waters reserved to the Portuguese. From the Canary's Parallel onwards, the Atlantic Ocean would be a Mare clausum to the Castilians. The treaty of Alcáçovas represented a huge victory for Portugal and resulted tremendously damaging to Castile. In Espina Barrio, Angel (2001), Antropología en Castilla y León e iberoamérica: Fronteras, vol. III (In Spanish), Universidad de Salamanca, Instituto de Investigaciones Antropológicas de Castilla y León, p. 118, ISBN 8493123110
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- ... This boundary line cut off Castile from the route to India around Africa ..., in Prien, Hans-Jürgen (2012), Christianity in Latin America: Revised and Expanded Edition, Brill, p. 8, ISBN 978-90-04-24207-4
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|Wikimedia Commons has media related to Spanish Empire.|
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- Francisco José Calderón Vázquez (2008), Fronteras, identidad, conflicto e interacción. Los Presidios Españoles en el Norte Africano (in Spanish), ISBN 978-84-691-6786-1, archived from the original on 14 February 2009
- The Kraus Collection of Sir Francis Drake at the Library of Congress contains primary materials on Spanish colonialism.