The area around India and the Indian Ocean.
I believe the answer is c hope this helps!
Archival research &a Oral history are two ways.
And then there is epistemology and historiography<span>.</span>
President Taft's use of "Dollar Diplomacy" in Nicaragua and China showed that American foreign policy was mainly a means of promoting the United States' commercial interest and economic power abroad. Through the "Dollar Diplomacy", policy loans were guaranteed to strategically important foreign countries such as Nicaragua and China.