Western.
western
western part
Western
The western part of Montana has more mountains than the eastern part.
The Rockies run north to south in the western part of the US.
The Rocky Mountains are in the western part of Montana. The eastern part of Montana is plains.
west
The Rocky Mountains are located in the western part of the United States. They stretch from Canada down to New Mexico.
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.
The western part. The eastern part is mostly just rolling plains. The western part is where the Rocky Mountains are.
western part
Western