For example before the revolution Cuba was just a sugar cane plant for America. They were a huge market. That's the real problem. It's not so much population as people whose societies didn't develop in any kind of natural way. But Japan's taken over in an economic sense.
Japan is probably the most powerful nation in the world today because it's the richest.
But Japan's very imperialistic too. Not in the same sense as the United States because there's no way Japan would start a war. Yeah, but war is a thing of the past because it's not really economically viable. America just uses war as an excuse to use all the armaments that they build up. The United States have been run on what amounts to a wartime economy since the fifties which is the reason that Japan now has more economic power.