The United States locates North America southern, the east faces Atlantic Ocean, the west is close to Pacific Ocean, the north connects Canada, the south depends Mexico and Gulf of Mexico。
The whole Boundaries are canned is divided into 5 geography areas westward by the east:The littoral plain in the southeast cent is two parts in Atlantic Ocean littoral plain and Mexican littoral plain。
This district elevation's below 200 meters, the most is formed a delta by the river but becomes, especially delta in Mississippi is the biggest delta in the world, soil quality the oil is black, rich soil。
There is some marsh ground in river mouth neighborhood。The Florida peninsula which locates this geography area is a biggest peninsula of the United States
。
。