West
east
east
The southern part of the United States.
The Eastern part of the United States has the fewest mountains. The Rocky Mountain Range takes up a large portion of the western part of the US.
It north israel
The great plains have the fewest mountains. I guess that would be more north than south, east or west.
The part of the US with the fewest mountains is generally the eastern region, particularly states along the East Coast. This area is known for its flatter terrain compared to the western and southern regions, which have more mountainous landscapes like the Rockies in the west and the Appalachians in the south.
Nebraska
east
== ==
the east.
The eastern part of the United States has the fewest mountains compared to the West, South, and Midwest regions. The eastern states are generally flatter and have lower elevation levels, with the Appalachian Mountains being the primary mountain range in this region.