Portal:North America

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Location North America.svg

North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere. It can also be described as a northern subcontinent of the Americas, or America, in models that use fewer than seven continents. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the west and south by the Pacific Ocean, and to the southeast by South America and the Caribbean Sea.

North America covers an area of about 24,709,000 square kilometers (9,540,000 square miles), about 16.5% of the earth's land area and about 4.8% of its total surface. North America is the third-largest continent by area, following Asia and Africa,[ better source needed] and the fourth by population after Asia, Africa, and Europe. In 2013, its population was estimated at nearly 579 million people in 23 independent states, or about 7.5% of the world's population, if nearby islands (most notably around the Caribbean) are included.

North America was reached by its first human populations during the last glacial period, via crossing the Bering land bridge approximately 40,000 to 17,000 years ago. The so-called Paleo-Indian period is taken to have lasted until about 10,000 years ago (the beginning of the Archaic or Meso-Indian period). The Classic stage spans roughly the 6th to 13th centuries. The Pre-Columbian era ended in 1492, with the beginning of the transatlantic migrations—the arrival of European settlers during the Age of Discovery and the Early Modern period. Present-day cultural and ethnic patterns reflect interactions between European colonists, indigenous peoples, African slaves and all of their descendants.

Owing to Europe's colonization of the Americas, most North Americans speak European languages such as English, Spanish or French, and their states' cultures commonly reflect Western traditions.

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Visitors descend the downstream side of Dam 1 on the Bull Run River.

The Bull Run River is a 21.9-mile (35.2 km) tributary of the Sandy River in the U.S. state of Oregon. Beginning at the lower end of Bull Run Lake in the Cascade Range, it flows generally west through the Bull Run Watershed Management Unit (BRWMU), a restricted area meant to protect the river and its tributaries from contamination. The river, impounded by two artificial storage reservoirs as well as the lake, is the primary source of drinking water for the city of Portland, Oregon.

It is likely that Native Americans living along the Columbia River as early as 10,000 years ago visited the Bull Run watershed in search of food. Within the past few thousand years they created trails over the Cascade Range and around Mount Hood, near the upper part of the Bull Run watershed. By the mid-19th century, pioneers used these trails to cross the mountains from east to west to reach the fertile Willamette Valley. In the 1890s, the City of Portland, searching for sources of clean drinking water, chose the Bull Run River. Dam-building, road construction, and legal action to protect the watershed began shortly thereafter, and Bull Run water began to flow through a large pipe to the city in 1895. Read more...
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U.S. states by date of statehood
Credit: Astrokey44
An animated image showing the U.S. states by date of statehood, that is, the date when each U.S. state joined the Union. Although the first 13 states can be considered to be members of the United States from the date of the Declaration of Independence, they are presented here as being "admitted" on the date each ratified the present United States Constitution. The secession of states to form the Confederacy is not addressed here.

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Charles Edward Magoon

Charles Edward Magoon (December 5, 1861 – January 14, 1920) was an American lawyer, judge, diplomat, and administrator who is best remembered as a governor of the Panama Canal Zone, Minister to Panama, and an occupation governor of Cuba. He was also the subject of several scandals during his career.

As a legal advisor working for the United States Department of War, he drafted recommendations and reports that were used by Congress and the executive branch in governing the United States' new territories following the Spanish–American War. These reports were collected as a published book in 1902, then considered the seminal work on the subject. During his time as a governor, Magoon worked to put these recommendations into practice. Read more...

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Temple I, Calakmul Biosphere

Calakmul ( /ˌkɑːlɑːkˈml/; also Kalakmul and other less frequent variants) is a Maya archaeological site in the Mexican state of Campeche, deep in the jungles of the greater Petén Basin region. It is 35 kilometres (22 mi) from the Guatemalan border. Calakmul was one of the largest and most powerful ancient cities ever uncovered in the Maya lowlands.

Calakmul was a major Maya power within the northern Petén Basin region of the Yucatán Peninsula of southern Mexico. Calakmul administered a large domain marked by the extensive distribution of their emblem glyph of the snake head sign, to be read "Kaan". Calakmul was the seat of what has been dubbed the Kingdom of the Snake or Snake Kingdom. This Snake Kingdom reigned during most of the Classic period. Calakmul itself is estimated to have had a population of 50,000 people and had governance, at times, over places as far away as 150 kilometers. There are 6,750 ancient structures identified at Calakmul, the largest of which is the great pyramid at the site. Structure 2 is over 45 metres (148 ft) high, making it one of the tallest of the Maya pyramids. Four tombs have been located within the pyramid. Like many temples or pyramids within Mesoamerica the pyramid at Calakmul increased in size by building upon the existing temple to reach its current size. The size of the central monumental architecture is approximately 2 square kilometres (0.77 sq mi) and the whole of the site, mostly covered with dense residential structures, is about 20 square kilometres (7.7 sq mi). Read more...
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Circumferentor

  • ... that the Chontal Maya of Tabasco consider themselves the direct descendants of the Olmec civilization?

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Air pollution over the City of Los Angeles
Credit: Diliff
Los Angeles is the second-largest city in the United States, with an estimated population of 3.85 million people. Los Angeles is one of the cultural, economic, scientific and entertainment centers of the country.

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