Why was the Cold War different from all other wars

Which word most closely describes the type of government in edward bellamy’s looking backward

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.

How did southern slaveholders attempt to convince people in the north to support slavery?