What event compelled the United States to enter World War II?

International Relations MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
International Relationsinternational-relations
Published
22 Feb 2025
Last updated
28 May 2026

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Explanation

The United States was drawn into World War II following Japan's surprise attack on Pearl Harbor on December 7, 1941, which led to a formal declaration of war. The invasion of Poland by Germany in 1939 triggered the conflict in Europe but did not directly involve the US at that time. The D-Day landings in 1944 occurred after the US had already joined the war. Therefore, the correct answer is Japan's attack on Pearl Harbor.

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