View Are The Mountains In Southwestern West Region Of Us Pictures. Many regions are defined in law or regulations by the federal government; They are in western north america.
And others by economic factors.
2) the rocky mountains in the west and the appalachian mountains in the east. There is a large population of hispanic americans living in every major city in the southwest. The usa occupies the territory from the pacific ocean to the atlantic ocean. Much of it is for historical reasons.