What historical event is often referred to as a 'day that will live in infamy' and marked the United States' entry into World War II?

Category: History · Difficulty: medium

Hint: It involved a surprise military strike in December 1941.

Answer

The Pearl Harbor Attack

Explanation

The attack on Pearl Harbor led to the U.S. declaring war on Japan.

This is a medium history riddle — a moderate challenge for most people. The answer is The Pearl Harbor Attack.

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