It hurt the south for a while, slave labor was good for the south's economy but bad for competition up north because nobody could find a job if all the slaves worked for free. The removal of slavery cemented this competition-based method into America.
Answer: The answer is Cultural attitudes
Explanation:
e2020
"Domino Theory" was based on the idea that countries on the brink of communism were waiting to fall to communism one after the other, since it was thought that they would fall in a way that resembled dominoes knocking each other over one by one.
