cause there are lots of moutains,,..
Western North America is more mountainous.
The western side of North America is more mountainous.
The western half of the country is more mountainous.
western
The Western US.
Western.
Western
I would say the western part of the US is more mountainous because the Rocky Mountains go through the western part
I would say the western part of the US is more mountainous because the Rocky Mountains go through the western part
western North America
eastern
Although both sides are both mountainous, the western side of the US has a much more mountainous landscape. But it is mostly the Northern Butte side.