>>938682104
Sure.
the African slave trade's earliest records come from 300BC
Thats about 2000 years before whitey ever got involved.

Whitey got involved in the slave trade around the 17th century and outlawed it in the 18th century.
Which means blacks were gleefully enslaving each other for millennia, then whites showed up to clean house.

It was shockingly easy too. Africans can't really do warfare very well.