Answer: The internment of the Japanese American citizens.
Explanation:
World War II began on September 1, 1939, but the United States did not officially become involved until 1941, after Japan attacked several American warships anchored at Pearl Harbor, Hawaii. This attack occurred without a prior declaration of war by Japan.
As a consequence of this attack, the Americans retaliated against the Japanese, including American citizens of Japanese origin. The government considered that they could act as spies and sent them to internment camps, and soldiers of Japanese origin were prohibited from fighting in the Pacific, they could only fight on the European front.
The internment of these citizens is considered one of the largest violations of civil liberties on American soil in history.
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