Looks like a few have asked this on here. So, copying my answer:
The correct answer is Imperialists.
Imperialism refers to a country's policy of expanding their power through economics, diplomacy and through military might.
This might mean invading a country or negotiating a base or opening up multiple factories. Or it might involve installing a puppet government.
The United States engaged actively in imperialism during the late 1800s and early 1900s.
