The USA Territory. The United States of America is the fourth largest country in the world (after Russia, Canada, and China). It occupies the southern part of North America and stretches from the Pacific to the Atlantic Ocean. It also includes Alaska in the north and Hawaii in the Pacific Ocean. The total area of the country is about nine and a half million square kilometres. The USA borders on Canada in the north and on Mexico in the south.
The Surface of the Country. The USA can be divided into three main regions: the Appalachians in the east, the plain in the central part, the Cordilleras including the Rocky Mountains, Sierra Nevada, and the dry Californian Valley between them in the west. Many rivers are flowing through the country, such as the swiftest Columbia and Colorado, the longest Mississippi with its main tributaries, the Missouri and the Ohio.
50 States with the President at the head. The US consists of 50 states and the District of Columbia. The District of Columbia is a piece of land set aside by the federal government for the nation’s capital, Washington, D. C. The United States has a federal system of government with the President at the head.