List three specific causes of american imperialism

Economic Factors, the US wanted to take an empire to give it new markets to sell goods and buy raw materials
Military factors, The US felt that taking an empire would give it more naval bases to have power, and to become a more important power
Cultural factors, A fair amount of Americans believed in the idea of "white mans burden" and felt the need to help civilize the rest of the world.

Iraq because its lack of policing and government concern