Why does lincoln cell human equality a "proposition", in his speech

two months after his defeat of napoleon bonaparte's colonial forces, jean-jacques dessalines proclaims the independence of saint-domingue, renaming it haiti after its original arawak name. in 1791, a slave revolt erupted on the french colony, and toussaint-louverture, a former slave, took control of the rebels.

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;