In the movie Gettysburg, General Longstreet comments to the British observer... "We should have freed the slaves and then fired on Fort Sumter". No idea if he actually said that (sort of doubt it) but had that happened, I think the south would have had it wrapped up in less than a year or Lincoln would have been tossed out on his @ss.

Slavery was a dying institution and would have died on it's own soon enough. And anyone who disagrees I'd remind that today we're so fuggin woke, you're free to pick your own gender.... and you're note even limited to two options.