The USA was colonized the same way many other lands in the world were colonized. Europeans arrived (usually under the guise of being missionaries, but not always), gained the trust of the native peoples, and the next thing you know the Europeans proclaimed themselves the owners of everything the natives once had. They would take the natural resources, the land, spread diseases among the natives that they had no immunity for and sometimes try to enslave the natives. If enslaving the natives didn't work, no problem. Just import some Africans and enslave them for a couple hundred years. So, there you have it---a quick summary of European colonization. Does anyone want to add anything? Did I forget something?