What? Take all their stuff at gunpoint, and burn the rest?
In a couple of decades, the law could have been changed without that.
As far as changing cultural attitudes go, the biggest difference is that in one area the population was more honest about its attitudes while the other was sanctimoniously hypocritical.
Maybe, 150 years after that, we are getting over that as a society--and maybe not.
Either way, the damage was done to the Republic, and the Federal Government became the one to routinely impose its will upon the States instead of the other way around. Now we see the result of that.
Perhaps, but the split of the South was factored on more than just slavery. Maybe in time those things would have changed on their own over decades, but everyone lives in the here and now as well. If your family is not doing well and the economics are crushing you you’re going to deal with short-term things that can help you rather than long-term that can’t help you now when you need it.