History was a driving force behind such migration, since humans tended to move to new territory when they lacked food, shelter, or other resources--meaning that most of the conflicts throughout history have been driven by the same forces that drove migration out of Africa.
Answer:
It was that they were cruel and dishonest.
Explanation:
I haven’t researched this much, but i do know that there were no beds for the slaves, they were chained to the ground shoulder to shoulder, typically unclothed. a lot would vomit from seasickness, terror, or lack of nutrition, and a good portion of them died before getting to their destination.