Just to say, the civil war was fought over the issue of slavery, but it was only an actual war to prevent the south from seceding. The WAR was over keeping the nation together, even though the main issue generating the ideological split was slavery. The war itself was then attributed more directly to the idea of freeing slaves for propaganda purposes (it looks so much nicer than WE DON'T WANT THEM LEAVIN' OUR CLUB BECUS THEY LIEK OWNIN SLAVES BUT WE DUNT).