The USA is located on the continent of North America. The United States borders on Canada in the North, and with Mexico in the South, it also has a maritime border with Russia.
The highest mountains in the US are Elbert, Whitney and McKinley.
The biggest rivers in the US are the Mississippi, the Missouri and the Arkansas.
Industry, agriculture and foreign trade are the main branches of the US economy.
The biggest cities of the United States are New York, Los Angeles and Chicago.
According to the US Constitution certain powers for the exercise of public powers are transferred to the Federal government of the United States. State powers that are not specified for transfer to the Federal government by the Constitution are performed by the States of the USA.
There are legislative, executive and judicial branches of government in the USA.