Why did the United States enter World War I?

Answer. Any of these is accepted.

Because Germany attacked U.S. ships

Also accepted
To support the Allied Powers (England, France, Italy, and Russia)
To oppose the Central Powers (Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria)

Source: U.S. Citizenship and Immigration Services, 2025 civics test. Last reviewed September 5, 2026.

This is question 101 of 128 on the 2025 USCIS civics test, in the section Recent history.

More from this section

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.

Name one war fought by the United States in the 1900s.#100 When did all women get the right to vote?#102 What was the Great Depression?#103 When did the Great Depression start?#104 Who was president during the Great Depression and World War II?#105 Why did the United States enter World War II?#106

Previous, #100Name one war fought by the United States in the 1900s.Next, #102When did all women get the right to vote?

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