Since Slaves we're crammed into ships, they often died of disease, as diseases spread much more effectively when people are constantly in contact with each other, as they often were because so many slaves were fit onto each ship. Think about it: You're more likely to catch a cold if you get coughed on no matter what you do , because you are always close to the sick person.
The economy of the south has retained an agricultural tendency. This is based on the richness of the soil coupled with an extended growing season which allowed for biodiversity.
The answer is <span>Western nations have guaranteed rights to most Middle Eastern oil fields.</span>