basin
im pretty sure its called the Piedmont but don't quote me on that because im not 100 % sure. You are 100% correct it is the "Piedmont"
The Appalachian Mountains cover an area of 737,000 square miles.
The native american lived west of the appalachian mountains.
Asia
foothills; savannas or valleys
The Appalachian Mountains cover up most of the area along the Atlantic Ocean.
Appalachian Mountains
Asia
Idaho
foothills; savannas or valleys
Appalachian mountains
They are in eastern northern area of America