This is going to sound REALLY bad, but as someone that enjoys studying history I find my views to be unpopular, but educated. I think what the founding fathers was perfect. Not abolished, but no more new slaves into the nation.
Let's be real, every successful civilization had forced labor at one time or another. Once the civilization becomes successful, forced labor becomes unnecessary and the citizens of that civilization become more interested in the freedom of slavery. That's what happened with European states. When their lives became more luxurious, that's when they saw slavery as an inhumane thing and fought for the rights of slaves. However, when their civilization is a mess, that's when the civilization uses forced labor to turn their land into a habitable and livable place.
That's why I don't approve of the stop of slavery in African states. If African civilization had forced labor to help with infrastructure they would be able to actually make great things with their nations. Instead... Their civilizations are fucked and will stay fucked... for a long time. Each nation has one city, maybe 2 that can be considered relevant to the world -- Cities like Lagos and Luanda. These places are hubs for commerce to trade things like diamonds, gold, oil, etc. However, the rest of their land is relatively useless due to a lack of infrastructure and workers that are completely unwilling to work.
I remember watching a movie Empire of Dust. It's a movie about some state employed Chinese engineers hired in deals with the DRC's government in order to help with their infrastructure. However, they kept running into troubles, such as how his workers kept stealing supplies, or wouldn't get to work on time. The frustrations weighed on them significantly until the end of the movie in which one of them flipped out and said this:
If you ask me, it's another way of how white people have oppressed blacks with the disguise for pretending to help. With the UN abolishing slavery for all nations, African nations will never be able get appropriate infrastructure to compete with other European nations as well as other nations that benefited from forced labor in the past, such as China. The only way any African nations would be able to eventually compete with western civs would be until western civs collapse. Until then, western civs will always have superiority over sub-Saharan civilizations.
So yea, my final point? The founding fathers should have limited slavery to ensure the slave trade doesn't grow, but still be sure it exists, and use forced labor until liberalism becomes a trend and slaves become abolished. We can't prove it, but I'm willing to bet that if the civil war didn't happen, eventually the Confederate States of America would have abolished slavery on its own once it became as rich and successful as the Union was.
