What was the main reason the us civil war started?

A common explanation is that the Civil War was fought over the moral issue of slavery. In fact, it was the economics of slavery and political control of that system that was central to the conflict

you didn't list the options. however, a few communist countries today are: the people's republic of china, north korea, and cuba.

the correct answer is:

true

i am an online student and after i submit my quizzes, it gives me the correct answers to any that i may have missed. the answer to this question is true