The answer would be B, since the US ended the Pacific War with two nukes dropped on Hiroshima and Nagasaki
The Oregon trail pointed the way for the United States to expand westward to achieve its “Manifest Destiny” and the goal of Manifest Destiny was territorial expansion of the United States.
Can you add a link to a readable version of the speech
B. Laws of gravity
good luck
Cause India was/is a good location to add to your Empire..Also to trade for spices and other goods