I believe the answer would be B. English descent
The Bantu migrated to East Africa and displaced other tribes. Option B is correct.
The Bantu expansion constitutes a significant series of migrations of the original proto-Bantu language speaking group, who expanded from an their place of origin around West Africa-Central Africa across much of sub-Saharan Africa. In the process, the Proto-Bantu-speaking settlers displaced pre-existing hunter-gatherer as well as pastoralist groups that they encountered.
The correct answer would be D) Representative democracy because its not A) since we are not serving one person, and not B) or C) either so its D).
A massive drout. It was called the Dust Bowl.