Answer and explanation

Correct answer: C. A rivalry with the Soviet Union

  1. Step 1: It lasted from the late 1940s to 1991. Answer: A rivalry with the Soviet Union. Why not the others: A war fought in the Arctic Ocean, A civil war in Korea only and A conflict with Mexico over borders don't fit.

Practise more Key Events and People.

Free questions with an explanation for every one, and full timed US Citizenship Civics Test mock tests.