points - 20 , brainliest , and thank you , 5 star

The area labeled in green represents what region of North America and the present-day United States?

A) the Great Plains

B) the Rocky Mountains

C) the Appalachian Mountains

D) the Mississippi River Valley

points 20 brainliest and thank you 5 starThe area labeled in green represents what region of North America and the presentday United StatesA the Great Plains B class=