American History — Recent American History · Question 97 of 128
What major event happened on September 11, 2001?
Practice answer: Terrorists attacked the United States
Why this is the answer
On September 11, 2001, terrorists attacked the United States, including the World Trade Center in New York and the Pentagon. Nearly 3,000 people were killed.
On the 2026 citizenship test, a USCIS officer asks up to 20 questions from the official 128-question pool — answering 12 correctly passes.
Study translations and question index
Practice index: 97. This is not the official 2025 syllabus question number. Translation indices share the same practice ID and answer-option order.
Español — practice:97:es
¿Qué acontecimiento importante ocurrió el 11 de septiembre de 2001?
Terroristas atacaron los Estados Unidos
العربية — practice:97:ar
ما هو الحدث الرئيسي الذي وقع في 11 سبتمبر 2001؟
هاجم إرهابيون الولايات المتحدة
Official syllabus and legal sources
M-1778 (09/25) — 2025 USCIS syllabus. Retrieved 2026-10-15. Check current USCIS answers.
- 8 U.S.C. § 1423 — English, history and civics requirements
- 8 C.F.R. § 312.2 — Knowledge of history and government
These laws establish testing requirements; they are not individual legal advice or a citation for every historical answer. Practice questions and study translations are editorial learning aids, not official USCIS translations. Confirm the test version that applies to your filing date.
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