Which forced United States to join World War II?
Correct answer: B. Attack on Pearl Harbour
- A. The Invasion of Poland
- B. Attack on Pearl Harbour
- C. The D-Day Invasion
- D. None of these
Explanation
Japan's attack on Pearl Harbor on 7 December 1941 led the United States to enter World War II. The invasion of Poland began the war in Europe but did not bring the United States into it.
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