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American History · 1800s

Question 96 of 128

What U.S. war ended slavery?

The official answers

The Civil War

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Practice the 2025 U.S. naturalization civics test the way it is asked: out loud, one question at a time.

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Oathway is a study aid, not legal advice and not an immigration service. The official study materials are free at uscis.gov/citizenship. Question text: USCIS form M-1778 (09/25), a U.S. government work.

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