An international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members.

• A. European Union
• B. NATO
• C. United Nations
• D. IMF

Answer: (A)

The key idea here is European postwar economic integration aimed at reducing trade barriers and increasing cooperation among neighboring countries. That goal led to the formation of the European Union, which grew out of early efforts like the European Economic Community to create a single market and coordinate policies across member states. NATO is a military alliance, not focused on trade barriers or economic cooperation. The United Nations is a global organization for peace and cooperation, not specifically about regional economic integration. The IMF deals with international monetary and financial issues rather than creating a regional economic bloc. So the organization that matches the description is the European Union.