Why did the US government think internment camps were necessary during World War II?

Japanese spies

Explanation:

The events of Pearl Harbor left the country on edge, and Japanese-Americans were put in internment camps where they were held to prevent a future attack. The U.S. government was suspicious of the Japanese having American spies feeding information to our enemies.

the answer that best explains what happened to george washington at fort necessity, pennsylvania is : washington was attacked by the french but was able to negotiate with them to peacefully end fighting. the battle took place on july 3, 1754. the battle is considered as being the start of the french and indian war.

what are two things that greatly the american economy after the war? the huge buildup of u.s. military the beginning of the korean conflict the creation of the gi bill the marshall plan for nations