While you are just now interested in facts, look up the pre-18th century slavery practices of Moors and Muslims. They engaged in slavery for centuries, and enjoyed a particularly lucrative business of it via constant raids on tribes living along western African coasts. Into the eighteenth century these same slave traders did business not just with white Europeans but also extended their business by trading with wealthy eastern buyers living in such domains as Turkey, the West Indies and present day Iran and Saudi Arabia.
I dislike the idea of slavery practiced by anyone or any culture, but I did go to college and have a degree in history. You on the other hand, are grasping at straws for an excuse to claim the slavery of Africans started and began with white people. And that, my friend, is not only racist, it ignores the fact slavery is still practiced in lands beyond the borders of the U.S. and Europe.