3 connected terms or people (amendment)

What is the main idea of this excerpt? 1.1.3

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.

Brainliestttme : ) how did the soviet union try to maintain control?