~Hello there! ^_^
your question: Which official is the most powerful member of the White House..?
Your answer: The Chief of staff is the official that is the most powerful member of the White House. This person guides the White House staff.
~Hope this helps! :D
The civil war affects us today because back in that time, their were slaves and slaves were treated unfairly. The civil war was to keep a country united and stop the south from breaking away from the united states. The effects of the war are that there are no more slaves and we must treat all people fairly no matter what the race they are. This also keep a country united.
It's got to be A or D mostly D for me I think it's D but check incase