Why did the United States government think Japanese Americans living on the West Coast were a threat to the national security of America after the Pearl Harbor attack?

Many Americans worried that citizens of Japanese ancestry would act as spies or saboteurs for the Japanese government. Fear — not evidence — drove the U.S. to place over 127,000 Japanese-Americans in concentration camps for the duration of WWII. Over 127,000 United States citizens were imprisoned during World War II.

Explanation:

Japanese Americans living on the West Coast were interned after the Pearl Habor attack because the American government were suspicious of them and believed they were spies for the Japanese Americans. They thought they were in full agreement with the Japanese government and were skeptical of their motives in regards to the United States.

Explanation:

c. the dred scott v. sandford case,

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