15. How were Japanese Americans on the West Coast treated by the U. S. government after Pearl Harbor? *
O They were required to enter into the U. S. military and act as spies
They were deported from the U. S., effectively sending 120,000 citizens & immigrants
back to Japan
O They were sent to 1 of 10 concentration camps throughout the western United States

Correct answer is They were sent to 1 of 10 concentration camps throughout the western United States.

Explanation:

The last option is correct as there were 10 camps located mostly in the western part of the country, mostly in California, Arizona, Colorado, Utah.

First option is not correct as until 1943 no man of Japanese descendant was able to join the army.

Second option is not correct as they were not sent back to Japan, but to this camps.

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.

the answers are a b and d