:For the computer game, see Imperialism (computer game). Imperialism has two meanings, one describing an action and the other describing an attitude. Most commonly it's understood in relation to Empire building, as the forceful extension of a nation's authority by territorial conquest establishing economic and political domination of other nations. In its second meaning the term describes the imperialistic attitude of superiority, subordination and dominion over foreign people. Imperialism is of… (More on Imperialism)