The United States of America occupy a large territory. The USA is situated in the central and southern part of Northern America. It is washed by the Atlantic Ocean in the east and by the Pacific Ocean in the west. It stretches from Canada in the north to Mexico, the Gulf of Mexico, and the Gulf of California in the South.
In size, the USA (the area is over nine million square kilometers) is the fourth among the nations after Russia, Canada and China. It has military bases all over the world.
The USA is divided into three areas:
Eastern area – a highland, where the Appalachian Mountains are situated, Central area – a plain, and Western area which is mountainous and includes the Cordilleras and the Rocky Mountains. The highest peak of the Cordilleras in the USA is 4,418 metres high. The Appalachian Mountains are very old. The Rocky Mountains are considered to be young.
The north – eastern part of the USA is the region of the Five Great lakes (Lake Superior, Huron, Michigan, Erie, and Ontario) which are connected by channels cut by rapids. The greatest of these rapids is the Niagara Falls. The St. Lawrence River joins the water of the five lakes to the Atlantic Ocean. In the west of the USA there is another lake called the Great Salt Lake.
The main rivers of the USA are Mississippi (it is the second largest river in the world after the Nile); the Missouri, the Yukon, the Colorado, the Columbia, the St. Lawrence, and the Hudson.