How did "sit-ins”, economic boycott, and the Freedom Riders share a similar way of protest?

How did the beliefs of the roman catholics differ from the eastern orthodox form of christianity?

The purpose of the comintern was a. to spy on anti-communist activity. b. to spread communism in other countries. c. to administer communist rule. d. to develop future communist leaders.

What was the effect of the industrial revolution on the working class?