I never gave any implications that white Europeans invented slavery. Slavery has been around for thousands of years. What I did say that white Europeans did invent racism based on the pseudoscience of measuring skulls of blacks and whites in order to determine intelligence. During this time the concept of races, white, black, and Asian, of humans is born. Again, this is around the 16 and 17 centuries.You keep acting like white Europeans invented slavery. They did not.
If the white Europeans were so hell bent in enslaving black people, why did they even buy the black captives? Why didn't they just save the money and enslave them all?
Your last sentence is ridiculous.