What was the U.S. policy of avoiding international involvement in the post-World War I era called?

• A. Isolationism
• B. Internationalism
• C. Interventionism
• D. Alliancesism

Answer: (A)

Staying out of foreign wars and avoiding long-term commitments to international alliances after World War I describes isolationism. After the war, many Americans wanted to focus on rebuilding the United States and avoid being drawn into European conflicts again. This mindset led to neutrality policies and, notably, the Senate’s rejection of joining the League of Nations, signaling a preference for keeping the U.S. separate from European security arrangements. Internationalism would mean active global involvement, and interventionism would involve taking part in foreign conflicts, while alliancesism isn’t a standard term for a policy. So the term that best fits this postwar stance is isolationism.