African slaves were originally chosen because where the Europeans landed on Native land, the Native Americans were dying off from diseases and sickness. Many African leaders had a hand in this for money purposes: weapons, tobacco, and gold.
The Nile River supplied a constant water source and fertile land around it that could be used for farming, which is important because pretty much everywhere else on the African continent is desert
hope this helps
Answer:
Hi ! What question do you have to answer ?
I know Columbus was one... Sorry, that's all I know.