Did citizens of the United States have real reason to be alarmed by the potential spread of communism?

I think

Explanation:The Red Scare was hysteria over the perceived threat posed by Communists in the U.S. during the Cold War between the Soviet Union and the United States, which intensified in the late 1940s and early 1950s.

answer; taking up arms to defend the nation;

adopted the practice of proskynesis, a persian court custom that involved bowing down and kissing the hand of others, depending on their rank.