With a POD sometime after the end of the American Revolution, what is the earliest that slavery could be abolished in America, and is it possible to do so, withour starting a civil war?
There was a proposal that Jefferson made which would have banned slavery from all the new states. It would probably have to make compromises for places like Alabama and Mississippi due to how relatively easy it is to grow cotton there.
Given that the OP says 'is it possible to do so, without starting a civil war?' not 'Without a civil war', that seems an odd 'earliest date of abolishment of slavery', given that it obviously can't be the earliest possible abolishment of slavery in the USA, what with it happening earlier in OTL.All in all, it is likely that the 1880's would have been our best bet.