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Why did the United States enter the Vietnam War?

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  1. Japan attacked Pearl Harbor
  2. To force the Iraqi military from Kuwait
  3. To stop the spread of communism

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References

  1. USCIS M-1778 (09/25), 128 Civics Questions and Answers (2025 version) www.uscis.gov/sites/default/files/document/questions-and-answers/2025-Civics-Test-128-Questions-and-Answers.pdf Checked 2026-10-09.

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