The period after each world war which saw massive upheaval in the u. s. and fear of many foreigners. it was characterized by widespread fears of communist influence on u. s. society and communist infiltration of the u. s. government."

red scare

Explanation:

This was the period after each world war which saw massive upheaval in the U.S. and fear of many foreigners. It was characterized by widespread fears of Communist influence on U.S. society and Communist infiltration of the U.S. government.

i believe the answer is d. it was not uncommon for people to faint or even convulse at these high-energy meetings.

determination