The special position of the United States in the world

The main part of the United States is located in the middle of North America. The original versions of the CIA World Survey 1989 to 1996 listed the total area of the United States as 93726 10 km? 1997 was revised to 9.63 million square kilometers (plus the Great Lakes and coastal waters such as estuaries, harbors and inland seas under the sovereignty of the United States) with a population of 320 million. It is an immigrant country with a common English.

The United States is the second largest country in the Americas, and its territory includes the mainland of the United States, Alaska in the northwest of North America and the Hawaiian Islands in the central Pacific Ocean. It covers an area of 93726 10/0 square kilometers (including 9158,960 square kilometers of land and about 200,000 square kilometers of inland waters). If the U.S. sovereign part of the Great Lakes is added, the coastal waters such as estuaries, harbors and inland seas are about 100 square kilometers, with an area of 9.63 million square kilometers.

The terrain of the United States is varied, with high terrain in the west and low terrain in the east. There are coastal plains on the east coast, which are wide in the south and narrow in the north, extending to New Jersey and Long Island, and there are also some glacial sedimentary plains. Behind the coastal plain is a hilly area with undulating terrain, extending all the way to the Appalachian Mountains in North Carolina and New Hampshire, with an altitude of 1, 830 meters.

To the west of the Appalachian Mountains is the central plain of the United States, with relatively flat terrain. The Great Lakes and the Mississippi River Basin, the fourth largest river in the world, are also located here. To the west of the Mississippi River, the topography of the internal plain began to rise, and finally it entered the great plain with a vast area and few topographical features in the central United States.

References:

Baidu Encyclopedia-USA