1. The great lakes b) Lie in the north of the usa
2. The niagara river c)flows out of the great lakes
3.The colorado river f) Flows south
4.Washintong D.C d)is the capital of the usa
5.The appalachians a)Are the mountains that stretch in the east of the usa
6.The rocky mountains e) stretch in the west of the us
7.The great plains h) are a land to the east of the Rocky mountians 8. New York g) is a big city in the northeast of the us.