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What major event happened on September 11, 2001 in the United States?

Answer. Any of these is accepted.
Terrorists attacked the United States
  • Also accepted
  • Terrorists took over two planes and crashed them into the World Trade Center in New York City
  • Terrorists took over a plane and crashed into the Pentagon in Arlington, Virginia
  • Terrorists took over a plane originally aimed at Washington, D.C., and crashed in a field in Pennsylvania
En español
¿Qué suceso de gran magnitud ocurrió el 11 de septiembre de 2001 en Estados Unidos?
  • Terroristas atacaron a Estados Unidos
  • Terroristas tomaron dos aviones y los estrellaron contra el World Trade Center en la ciudad de Nueva York
  • Terroristas tomaron un avión y lo estrellaron contra el Pentágono en Arlington, Virginia
  • Terroristas tomaron un avión dirigido originalmente a Washington, D.C., que se estrelló en un campo de Pensilvania

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 115 of 128 on the 2025 USCIS civics test, in the section Recent history. It is one of the 20 questions on the 65/20 version.

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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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