Why is it important that United States from international alliances?

What did the us civil rights movement gain new momentum after world 2

The primary goal of the abolitionist movement was to a) immediately emancipate or free all enslaved people. b) allow the gradual release of enslaved people. c) end the importation of enslaved people from africa. d) make mandatory the education of all enslaved people.

Why would employers want there to be large numbers of unemployed workers around?