America without the Civil War

[Earth]

I think slavery would've stayed for maybe a decade longer, but eventually, it would've resulted in it's abolishment. Lincoln would've survived the presidency, and not being given the historical 'great man' treatment we see today. Maybe the south would've maintained their economic upswing, too, resulting in a different demographic than under the reconstruction.

[Earth]

Indeed, slavery likely lasts into the 20th Century without a Civil War.

That's an even bigger stretch than my own interpretation, particularly with the advent of the industrial revolution.