western
the rocky mountains
Rocky Mountains
The Rocky Mountains.
the Rocky Mountains
The Santa Ynez mountains
Two western mountain ranges in the US are the Rocky Mountains and the Sierra Nevada Mountains.
Yes, the western part of the US has more mountains than the eastern part. The Rocky Mountains and Sierra Nevada mountain ranges are prominent in the western part of the US, while the eastern part has the Appalachian Mountains.
Eastern US- Appalachian Mountains. Western US- Rocky Mountains
Western.
In the eastern US.
No nation or region "splits" the Rocky Mountains. The Rocky Mountains, however, may be described as splitting western Canada and the western US.