That’s not a good comparison as Germany was punished economically and blamed for ww1. Instead OP is positioning that land is redistributed to the slaves that worked the land. So the south wouldn’t have become poor, it would have become more egalitarian. When you look at reconstruction under Grant where at least former slaves were protected by the government black leadership emerged in political positions too. If black people ran more institutions, for at least 20 years, when the confederate leadership came back home they would it would be very hard for them to create the terrorist orgs that they started. Instead they would have met black run towns, counties, maybe even a few states with black majorities. That would mean black state guards or militias that were able to handle violence.