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Why did the United States enter World War II?

Answer. Any of these is accepted.
Japanese attacked Pearl Harbor
  • Also accepted
  • Bombing of Pearl Harbor
  • To support the Allied Powers (England, France, and Russia)
  • To oppose the Axis Powers (Germany, Italy, and Japan)

Source: U.S. Citizenship and Immigration Services, 2025 civics test. Last reviewed September 5, 2026.

This is question 106 of 128 on the 2025 USCIS civics test, in the section Recent history.

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From World War I to September 11, 2001: why the United States entered each war, the Great Depression, the Cold War, the civil rights movement, and American Indian tribes and innovations. This is the second-largest section, so a few of these will almost certainly come up.

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Recent history: read aloud, answered out loud, repeated until solid.

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