D. To isolate people who were believed to be threats.
America used these camps after the bombings of Pearl Harbor. They believed that Japanese were a threat to the country, so they has them put in internment camps.
"Red Army" is slang, I believe
this looks like a multiple choice question, but the multiple choice answers are not shown, so this is hard to answer
citizens showing a renewed interest in communism
Answer:
changes in government, before 1770 most countries were either monarchies, absolute monarchies, republics, city states, or empires afterwards came political theory and such on a much greater scale