Generally, buyers have to complete their purchase in the currency of the selling nation. In other words, before buying a foreign product they must secure some foreign currency.
Currency is a generally accepted form of money, including coins and paper notes, which is issued by a government and circulated within an economy. Used as a medium of exchange for goods and services, currency is the basis for trade.
International Trade Law includes the appropriate rules and customs for handling trade between countries. However, it is also used in legal writings as trade between private sectors, which is not right.
International trade is a complicated area of law to research because there are numerous levels of trade organizations and interactions. There are bilateral trade agreements, regional trade agreements and multinational trade agreements. Each of these agreements has its own history, policies and dispute settlement procedures.