An artificial barrier to international trade is?

A.

political unrest

B.

culture of the people

C.

units of measurement

D.

custom duties

Correct answer is D

The three major barriers to international trade are natural barriers, such as distance and language; tariff barriers, or taxes on imported goods; and non-tariff barriers. The non-tariff barriers to trade include import quotas, embargoes, buy-national regulations, and exchange controls.

Customs Duty refers to the tax that is imposed on the transportation of goods across international borders.