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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)
En español
¿Por qué entró Estados Unidos en la Segunda Guerra Mundial?
  • Los japoneses atacaron Pearl Harbor
  • El bombardeo de Pearl Harbor
  • Para apoyar a las Potencias Aliadas (Inglaterra, Francia y Rusia)
  • Para oponerse a las Potencias del Eje (Alemania, Italia y Japón)

El examen se hace en inglés. Más en la página en español.

Source: U.S. Citizenship and Immigration Services, 2025 civics test. Last reviewed September 5, 2026. Report a problem with this question.

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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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