According the question is very important comment about who was the Buganda Empire?
Buganda was a powerful Kingdom of east africa during the 19th century. It is located along the northern shore of lake Victoria in present-day-south-central Uganda.
I say a because there were 16 African Americans in congress in total, so not D. And not b or c because the first 3 African Americans in congress were from the south, that's why i say 12
The closest one is the first one. He can veto any bill and send it back to congress. He has to state why and they have to consider his whys. If both houses can must a 2/3 majority for the bill, it passes without his signature.