Question

an international organization of european countries formed after world war ii to reduce trade barriers and increase cooperation among its members.
european union
nafta
nato
warsaw pact

Explanation:

The European Union is an international organization of European countries formed post - World War II to reduce trade barriers and enhance cooperation. NAFTA is a North - American agreement, NATO is a military alliance, and the Warsaw Pact was a political and military alliance of Eastern European countries.

Answer:

A. European Union