How did the Atlantic slave trade compare to the indigenous systems of African slavery Europeans encounter when when they first arrived?

The beginning of the Atlantic slave trade in the late 1400s disrupted African societal structure as Europeans infiltrated the West African coastline, drawing people from the center of the continent to be sold into slavery.

Explanation:

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.