Quick answer (verified 2026-07-08 by CivicFlare):
Official USCIS answer to "Thomas Jefferson is famous for many things. Name one.": Writer of the Declaration of Independence, Third president of the United States, Doubled the size of the United States (Louisiana Purchase), First Secretary of State, Founded the University of Virginia, Writer of the Virginia Statute on Religious Freedom. Learn historical context and practice online with CivicFlare.
OFFICIAL USCIS ACCEPTED ANSWER(S)
Thomas Jefferson wrote the Declaration of Independence, was the third President, and purchased the Louisiana Territory.
The USCIS includes questions about American-history / Founding to ensure new citizens understand the foundational structures, laws, and history of the United States. Knowing the correct answer demonstrates your attachment to the principles of the U.S. Constitution.
When the USCIS officer asks you, "Thomas Jefferson is famous for many things. Name one.", speak clearly and confidently. You do not need to give every possible answer if more than one is accepted — stating just one of the official answers (such as "Writer of the Declaration of Independence") is completely sufficient to earn full credit.
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