My own foreparents were serfs, bought and sold, not allowed to have names until the 19th. Century....it was cheaper to buy a lightly pigmented slave in the Russian Empire at that time than a greater pigmented slave in Virginia....one should not forget the "white" indentured servants ( really slaves) that preceed them in the USA.

Imperial slaves were emancipated in the same time frame (varied in different parts of the Russian Empire) as were their US version....both reacted the same way , by educating themselves , pouring into universities, founding their own universities until both became more literate than their past masters with higher employment lower unemployment rates, higher marriage rate, lower illegitimacy rates, lower divorce rates, greater maintainance and valuation of family units...then it went awry in the USA when their guilt ridden past masters and others made them dependent on freebies with disastrous sociological consequences for the recipients.