Final answer:
Japan attacked U.S. forces at Pearl Harbor, drawing the United States into World War II.
Step-by-step explanation:
On December 7, 1941, Japan attacked U.S. forces at Pearl Harbor, which drew the United States into World War II. This surprise military strike on the U.S. naval base in Hawaii led to the death of more than 2,400 Americans and caused significant damage to the U.S. Pacific Fleet. It was this attack that prompted President Roosevelt to ask Congress for a declaration of war against Japan.
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