What is he saying is significant about America in the gettysburg address?

many white slave owners had declared themselves to be “true” Americans.

the nation formed in 1776 was “dedicated to the proposition that all men are created equal.” In an interpretation that was radical at the time– ...Aug 24, 2010

Explanation:

abraham lincoln, according to anyone who was connected with agriculture, represented the worst of northern politicians. shortly after lincoln was elected, south carolina seceded from the union. they along with other southern states, retained their anger. in a way, it was their own fault: the democrats were split in the south. some wanted slavery to be extended in other states that were about to join the union and some didn't want it badly enough. lincoln had a solid backing from his party: the republicans were united in not wanting slavery to be expanded.

its a map of something