Because the western part is closer to the Pacific plate, which pushes against the North American plate, and causes more uplift.
western North America
western
Western North America is more mountainous.
The western part of North America since it is where the Rocky Mountains are.
For simple questions like this.... Use this strategy mountains mountains in the us north south east and west ny is to the east texas to the south montana in the north la in the west mountains more east or west w is for west e is for east s is for south t if for texas this is west
Western because the Rocky Mountains
Because that is how it was formed there is more mountains there.
Because of the Continental Divide, which causes more uplift, and that creates more mountains.
The western side of North America is more mountainous.
Western North America is more mountainous.
western north America
western North America