A group of states that have reduced or eliminated trade barriers among themselves and have established a common external tariff is called ________.
A. the United Nations System
B. a free trade area
C. an economic consultative association
D. a customs union
Answer:D
A group of states that have reduced or eliminated trade barriers among themselves and have established a common external tariff is called ________.
A. the United Nations System B. a free trade area C. an economic consultative association D. a customs union