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In most countries, such trade represents a significant share of gross domestic product (GDP). While international trade has existed throughout history (for example Uttarapatha, Silk Road, Amber Road, scramble for Africa, Atlantic slave trade, salt roads), its economic, social, and political importance has been on the rise in recent centuries.
Carrying out trade at an international level is a complex process when compared to domestic trade. When trade takes place between two or more nations factors like currency, government policies, economy, judicial system, laws, and markets influence trade.
To smoothen and justify the process of trade between countries of different economic standing, some international economic organisations were formed, such as the World Trade Organization. These organisations work towards the facilitation and growth of international trade. Statistical services of intergovernmental and supranational organisations and national statistical agencies publish official statistics on international trade.
A product that is transferred or sold from a party in one country to a party in another country is an export from the originating country, and an import to the country receiving that product. Imports and exports are accounted for in a country's current account in the balance of payments. 
Trading globally may give consumers and countries the opportunity to be exposed to new markets and products. Almost every kind of product can be found in the international market, for example: food, clothes, spare parts, oil, jewellery, wine, stocks, currencies, and water. Services are also traded, such as in tourism, banking, consulting, and transportation.
Increasing international trade is crucial to the continuance of globalisation.[ citation needed] Countries would be limited to the goods and services produced within their own borders without international trade. International trade benefits many countries in various aspects. In the case of Vizio’s flat-panel TVs, the manufacturing leadership has been shifting from one country to another due to global economic growth. At first, Japan could assemble the components of this TV and sell it out to the other countries such as US. However, recession affected Japan and South Korea took the lead in assembling the parts of this TV. Samsung played a critical role in the selling and manufacturing of the flat TV. Taiwan also took advantage of the recession that affected South Korea and the investors assembled electronic components of Vizio’s flat-panel TVs. At first the US suffered from this cycle because despite inventing this business idea, other countries implemented it in the international market. Chinese eventually started manufacturing flat TVs at a lower cost compared to the previous investors. It is important to note that US benefited from the cycle because many investors could manufacture the TV at lower cost (Kandel, Kosenko, Morck & Yafeh, 2013). China is also another country that benefited from this business because it started manufacturing the product late at a lower price. South Korea and Japan suffered from the global recession because it was expensive to manufacture Vizio’s flat-panel TVs at the beginning.
Despite the benefits that many countries enjoyed from selling Vizio’s flat-panel TVs, many nations suffered due to changes in international economy. Some countries experienced recessions that could not favor the manufacture of this product. For example, Japan became the first country to sell the flat-panel screens in 1990s but decade-long recession affected the business operations and surrendered to South Korea. It is also important to note that South Korea suffered the same fate from the Asian crisis in 1997 (Lazarev, 2007). Mexico is one lucky country that never suffered the consequences of crisis. The country could assemble flat-panel TVs after sourcing the electronic parts from other countries (Hill & Hult, 2019). In this regard, it is clear that countries that took part in the manufacture of these TVs were affected in different ways.
The US played a critical role in the invention and manufacture of the flat-panel TVs. In this regard, the decision made by the US may affect the entrepreneurs at the local and international level. If the US government demands that flat-panel displays be sold in the country only, the investors will have to sell the products at lower prices. It is clear that the prices of these flat-panel displays are cheap in the US compared to the countries. In addition, the local investors will not have the opportunity to compete at international level (Kandel, Kosenko, Morck & Yafeh, 2013). The quality of the screens can be compromised because the local manufacturers do not encounter foreign competitors.
The future production of these TVs will change. Technology is changing the mode of production from one year to another. For instance, the manufacture of these TVs began from assembling electronic parts from different countries. However, things have changed and currently, every country is aiming at using the local resources to manufacture the screens.
International trade is, in principle, not different from domestic trade as the motivation and the behavior of parties involved in a trade do not change fundamentally regardless of whether trade is across a border or not.
However, in practical terms, carrying out trade at an international level is typically a more complex process than domestic trade. The main difference is that international trade is typically more costly than domestic trade. This is due to the fact that a border typically imposes additional costs such as tariffs, time costs due to border delays, and costs associated with country differences such as language, the legal system, or culture ( non-tariff barriers).
Another difference between domestic and international trade is that factors of production such as capital and labor are often more mobile within a country than across countries. Thus, international trade is mostly restricted to trade in goods and services, and only to a lesser extent to trade in capital, labour, or other factors of production. Trade in goods and services can serve as a substitute for trade in factors of production. Instead of importing a factor of production, a country can import goods that make intensive use of that factor of production and thus embody it. An example of this is the import of labor-intensive goods by the United States from China. Instead of importing Chinese labor, the United States imports goods that were produced with Chinese labor. One report in 2010 suggested that international trade was increased when a country hosted a network of immigrants, but the trade effect was weakened when the immigrants became assimilated into their new country. 
The history of international trade chronicles notable events that have affected trading among various economies.
There are several models which seek to explain the factors behind international trade, the welfare consequences of trade and the pattern of trade.
|Rank||Country||International trade of
goods (billions of USD)
|International trade of
services (billions of USD)
|Total international trade|
of goods and services
(billions of USD)
|–||European Union ||3,821||1,604||5,425|
|21||United Arab Emirates||491||92||583|
|Rank||Commodity||Value in US$('000)||Date of |
|1||Mineral fuels, oils, distillation products, etc.||$2,183,079,941||2015|
|2||Electrical, electronic equipment||$1,833,534,414||2015|
|3||Machinery, nuclear reactors, boilers, etc.||$1,763,371,813||2015|
|4||Vehicles other than railway||$1,076,830,856||2015|
|5||Plastics and articles thereof||$470,226,676||2015|
|6||Optical, photo, technical, medical, etc. apparatus||$465,101,524||2015|
|8||Iron and steel||$379,113,147||2015|
|10||Pearls, precious stones, metals, coins, etc.||$348,155,369||2015|
President George W. Bush observed World Trade Week on May 18, 2001, and May 17, 2002.   On May 13, 2016, President Barack Obama proclaimed May 15 through May 21, 2016, World Trade Week, 2016.  On May 19, 2017, President Donald Trump proclaimed May 21 through May 27, 2017, World Trade Week, 2017.   World Trade Week is the third week of May. Every year the President declares that week to be World Trade Week.  
- Aggressive legalism
- Export control
- Free trade
- Free-trade area
- Gravity model of trade
- Import (international trade)
- International business
- International trade law
- Market Segmentation Index
- Monopolistic competition in international trade
- Northwest Passage
- Panama Canal
- Suez Canal
- Trade Adjustment Assistance
- Trade bloc
- Trade finance
- United Nations Conference on Trade and Development (UNCTAD)
- List of countries by current account balance
- List of countries by imports
- List of countries by exports
- List of international trade topics
- "Trade – Define Trade at Dictionary.com". Dictionary.com.
- International Trade and Finance by ICC Academy
- Staff, Investopedia (2003-11-25). "Balance Of Payments (BOP)". Investopedia. Retrieved 2017-05-07.
- Kusum Mundra (October 18, 2010). "Immigrant Networks and U.S. Bilateral Trade: The Role of Immigrant Income". papers.ssrn.
Mundra, Kusum, Immigrant Networks and U.S. Bilateral Trade: The Role of Immigrant Income. IZA Discussion Paper No. 5237. Available at SSRN: http://ssrn.com/abstract=1693334 ... this paper finds that the immigrant network effect on trade flows is weakened by the increasing level of immigrant assimilation.
- Leading merchandise exporters and importers, 2016
- excluding intra-EU trade
- International Trade Centre (ITC). "Trade Map - Trade statistics for international business development".
- Office of the Press Secretary (May 22, 2001). "World Trade Week, 2001". Federal Register. Washington, D.C.: Federal Government of the United States. Archived from the original on November 24, 2016. Retrieved March 13, 2017. Alt URL
- Office of the Press Secretary (May 22, 2002). "World Trade Week, 2002". Federal Register. Washington, D.C.: Federal Government of the United States. Archived from the original on March 13, 2017. Retrieved March 12, 2017. Alt URL
- "Presidential Proclamation -- World Trade Week, 2016". whitehouse.gov. Washington, D.C.: White House. May 13, 2016. Retrieved April 11, 2017.
- Office of the Press Secretary (May 19, 2017). "President Donald J. Trump Proclaims May 21 through May 27, 2017, as World Trade Week". whitehouse.gov. Washington, D.C.: White House. Retrieved May 20, 2017.
- "President Donald J. Trump Proclaims May 21 through May 27, 2017, as World Trade Week". World News Network. United States: World News Inc. May 20, 2017. Retrieved May 20, 2017.
- "Import Export Data". Import Export data. Retrieved 2017-10-06.
- "World Trade Week New York". World Trade Week New York. Retrieved 2017-10-06.
- Jones, Ronald W. (1961). "Comparative Advantage and the Theory of Tariffs". The Review of Economic Studies. 28 (3): 161–175. doi: 10.2307/2295945.
- McKenzie, Lionel W. (1954). "Specialization and Efficiency in World Production". The Review of Economic Studies. 21 (3): 165–180. doi: 10.2307/2295770.
- Samuelson, Paul (2001). "A Ricardo-Sraffa Paradigm Comparing the Gains from Trade in Inputs and Finished Goods". Journal of Economic Literature. 39 (4): 1204–1214. doi: 10.1257/jel.39.4.1204.
Data on the value of exports and imports and their quantities often broken down by detailed lists of products are available in statistical collections on international trade published by the statistical services of intergovernmental and supranational organisations and national statistical institutes. The definitions and methodological concepts applied for the various statistical collections on international trade often differ in terms of definition (e.g. special trade vs. general trade) and coverage (reporting thresholds, inclusion of trade in services, estimates for smuggled goods and cross-border provision of illegal services). Metadata providing information on definitions and methods are often published along with the data.
- United Nations Commodity Trade Database
- Trade Map, trade statistics for international business development
- WTO Statistics Portal
- Statistical Portal: OECD
- European Union International Trade in Goods Data
- Food and Agricultural Trade Data by FAO
- Resources for data on trade, including the gravity model
- Asia-Pacific Trade Agreements Database (APTIAD)
- Asia-Pacific Research and Training Network on Trade (ARTNeT)
- World Integrated Trade Solution (WITS)
- Market Access Map, an online database of customs tariffs and market requirements
- Trade Data Monitor, a database of monthly import/export statistics for all nations and commodities (subscription required)
- ExportNation Trade Statistics
- Export Port and Product List