Most would say A but that doesn't matter because a lot of black people come from the south. I'd say it's because more of the HISTORY of the south.
The geographical concentration of African people change as a result of the Atlantic Slave Trade resulted to the (A) Large populations of Africans emerged in North and South America and the Caribbean. During the slave trade, there is a big change in transferring African to other places.
They now have a great water source and a way to travel?
