International trade is the exchange of capital, goods, and services across international borders or territories. Trading-partners reap mutual gains when each nation specializes in goods for which it holds a comparative advantage and then engages in trade for other products. In other words, each nation should produce goods for which its domestic opportunity costs are lower than the domestic opportunity costs of other nations and exchange those goods for products that have higher domestic opportunity costs compared to other nations.
International trade is a method of economic interaction between international entities and is an example of economic linkage. Other forms of economic linkages include(a)foreign financial investment,(b)multinational corporations, and(c)foreign employees. The growth in these forms of economic linkages is known as globalization.
International Trade : Countries benefit from producing goods in which they have comparative advantages and trading them for goods in which other countries have comparative advantages.