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1 vote
What event directly caused the United States to join WWII?

A
the discovery of concentration camps in Europe
B
the sinking of American warships by German U-boats
с
Hitler's invasion of Poland
D
the bombing of Pearl Harbor

1 Answer

2 votes

Answer:

D

Step-by-step explanation:

Japan's sneak attack on Pearl Harbor caused the US to join the war

User SJMan
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