Very similar to Jesus' flip flop
I believe the answer is: C. diplomats and ambassadors
Diplomats and ambassadors are deployed to live in foreign country as their country's representation in that foreign land. They played a huge role in negotiating political and trading agreements with foreign countries and also had the role in protecting the rights of citizens that live in foreign countries.
In the United States, it was mainly "(C) People of the northern United States, who profited from the creation of the first national bank, since the northern economy was far more merchant-based than the agrarian south.