Yeah, Slavery had absolutely NOTHING to do with it. Lincoln even said he could care less whether it ended or stayed. The "Slavery Issue" was instituted during reconstruction when probably even more damage was done to the South. It was strictly to put the black population in the "carpetbagger/woe is me" mentality. The North put the unqualified in charge, and disenfranchised those who knew what was going on.
And, that's exactly right. It was to put an end to state's rights which would end the rights of the state's people to address their grievances, and make the federal government "The Boss". Well, a mighty fine job was done. And everyone knows the federal government is, "The Boss" today...
Did you know that "conservative" Dwight D. Eisenhower called Fidel Castro "the Abraham Lincoln of the Caribbean"?