I believe it was slaves. From what I know, slaves were widespread all over Africa. I hope I helped.
The impact of the Magna Carta is b) the foundation for individual rights of the people.
The Magna Carta established the rights of individuals, the Bill of Rights was inspired by the Magna Carta.
Immune tro most european diseases , slack so u can see them run, strong hard workers,experienced in farming, did not know the land, so they couldnt run away