USA is a country in North America. Its neighbours are Canada and Mexico. It extends from start to middle of North America. There are 50 States in the USA. Some of them are big, some of them are small. The capital city of the United States is Washington. There are US government and Congress. It doesn't belong to any state. There are many kinds of land in the USA. The longest river of USA is Missouri, but on the coast of Potomac are placed many banks. The highest mountains are Alaskan mountains and mountains of Saint Ilia. There are a lot of open space in USA. The largest city of US is New York. In this country are living more than 300 million people!