There was a lot of patriotism after 1812. It was essentially the second revolutionary war.
The US actually gained territory in the south (West Florida from Spanish).
Manufacturing grew during this time to supply the war effort.
A ton of natives were killed during the war (10000 according to wikipedia), so there was a lot less resistance from the natives.
The correct answers are 1, 2, and 4.
The best choice would be D.
Fascism arose in Europe after World War I when many people yearned for national unity and strong leadership. In Italy, Benito Mussolini used his charisma to establish a powerful fascist state.
The indian resevoirs are meant to strictly separate them from the world, they stay secluded and only to themselves