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Name one war fought by the United States in the 1900s.

Answer. Any of these is accepted.
World War II
  • Also accepted
  • World War I
  • Korean War
  • Vietnam War
  • Persian Gulf War
En español
Mencione una guerra del siglo XX (los años 1900) en la que combatió Estados Unidos.
  • La Segunda Guerra Mundial
  • La Primera Guerra Mundial
  • La Guerra de Corea
  • La Guerra de Vietnam
  • La Guerra del Golfo (Pérsico)

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 100 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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Previous, #99Name one leader of the women’s rights movement in the 1800s.

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