> Предков современных "афро-американцев" - рабов во многих поколениях - продавали на вывоз их хозяева - африканские рабовлаельцы феодалы.
Europeans usually bought slaves who were captured in tribal wars between African kingdoms and chiefdoms, or from Africans who had made a business out of capturing other Africans and selling them. Europeans provided a large new market for an already-existing trade, and while an African held in slavery in his own region of Africa might escape or be traded back to his own people, a person shipped away was sure never to return.
Slavery in African cultures was generally indentured servitude: slaves were not chattel, nor enslaved for life. African slaves were paid wages and were able to accumulate property. They often bought their own freedom and could then achieve social promotion — just as freedmen in ancient Rome — some even rose to the status of rulers (e.g. Jaja of Opobo and Sunni Ali Ber).
********en.wikipedia.org/wiki/Atlantic_slave_trade