Question

what is barrier on foreign trade

Answer 1

The restrictions put up by the Govt. on trade purposes are known as Trade barriers. These can be the policies that the Govt. implements.

Answer 2

 barrier to trade is a government-imposed restraint on the flow of international goods or services. The most common barrier to trade is a tariff—a tax on imports. ... Both tariffs and subsidies raise the price of foreigngoods relative to domestic goods, which reduces imports