Is the exchange of capital, goods, and services across international borders or territories[1] because there is a need or want of goods or services.[2] In most countries

Advanced technology (including transportation), globalization, industrialization, outsourcing and multinational corporations have major impacts on the international trade system.
Differences from domestic trade
Ports play an important role in facilitating international trade. The Port of New York and New Jersey grew from the original harbor at the convergence of the Hudson River and the East River at the Upper New York Bay
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).
History
The history of international trade chronicles notable events that have affected trading among various economies.
Theories and models
There are several models that seek to explain the factors behind international trade, the welfare consequences of trade and the pattern of trade
Most traded export products
Largest countries by total international trade
Volume of world merchandise exports
Observances
In the United States, the various U.S. Presidents have held observances to promote big and small companies to be more involved with the export and import of goods and services. President George W. Bush observed World Trade Week on May 18, 2001, and May 17, 2002.[8][9] On May 13, 2016, President Barack Obama proclaimed May 15 through May 21, 2016, World Trade Week, 2016.[10] On May 19, 2017, President Donald Trump proclaimed May 21 through May 27, 2017, World Trade Week, 2017.[11][12] World Trade Week is the third week of May. Every year the President declares that week to be World Trade Week.[13][14]