Question 78 of 100 · 2008 test
Name one war fought by the United States in the 1900s.
This question is from the 2008 test, which applies if you filed Form N-400 before Oct 20, 2025; later filers take the 2025 test of 128 questions - check your version on the official USCIS test-updates page.
Acceptable answers
- World War I
- World War II
- Korean War
- Vietnam War
- (Persian) Gulf War
Explanation
U.S. wars in the 1900s include World War I, World War II, the Korean War, the Vietnam War, and the Gulf War.
Why it matters
These conflicts defined America's role as a global power in the 20th century.
The 65/20 special consideration
Question 78 is one of the 20 questions in the 65/20 set. An applicant who is 65 or older and has been a lawful permanent resident for 20 years or more studies only those 20 questions instead of all 100, and this is one of them.
Answers that get mixed up with this one
These are the wrong options the practice test puts beside this question. Each one is the correct answer to a different question, which is what makes it tempting.
- (George) Washingtonanswers Question 69: Who is the "Father of Our Country"?
- fought for women's rightsanswers Question 77: What did Susan B. Anthony do?
- Washington, D.C.answers Question 94: What is the capital of the United States?
More Recent American History questions
Questions the officer draws from the same part of the test. Studying them together is what keeps their answers apart.