I beg to differ. A slave economy did not make for a better economy. There is a reason that the vast majority of business owners in the US were not slave owners and many that once were, had given up the practice. Owning slaves was expensive. You had to feed, clothe, house them. You had to hire management, to watch, discipline, shoot them if they stole a loaf of bread, then you lost on your investment. It wasn't a career path for the faint of heart.
Not to mention the taxes and lawmen, jails and legislation just to keep people as chattel. Yup, Slave economies are expensive propositions... Not a great model for an economy, much less a sustainable one.
Yes, some people made fortunes off the backs of slave labour, but it did not benefit everyone at the time. How could it possibly benefit everyone at a later date?
Trade routes are inevitable despite the manner of production. Where ever people live they gotta eat and, by law, wear clothing.
As for reparations, paying victims makes sense. Paying descendants? If property was taken, it should be given back or paid for. But for the crimes or suffering their family endured, how do you put a price on an awful memory?
If I could, I'd go back and sue the bejesus out of queen vickie and her ilk for all kinds of pain suffered at the hands of my fore-family. Realistically though, when does it end. What piece of land is devoid of bloodshed or hurt?