What did the French, Haitian, and American revolutions mean for African Americans, and the North American institution of slavery? How did slavery both reconcile or contradict with Enlightenment ideals of freedom, private property, knowledge, and the nature of (political) power?

lincoln presided over the union victory in the american civil war, which dominated his presidency. a former whig, lincoln ran on a political platform opposed to the expansion of slavery in the territories. his election served as the immediate impetus for the outbreak of the american civil war.

the answer is definitley b!