The USA is a Presidential Republic. It is made up of 50 states and an indipendent district, Washington D.C., which is the capital and seat of the US government.
The Government is divided into three branches: the Legislative branch led by the Congress, the Executive led by the President and the Judiciary led by the Supreme Court.
The President is the head of state and head of government. He is elected by the people every four years. His official residence is the White House. The USA has a two-party system: the Republican Party and the Democratic Party.
The official currency used in USA is the US dollar.
Barack Obama is the first Afro - American to be elected President of the USA. He was born in Honolulu, Hawaii, in 1961. His father was an African from Kenya and his mother was an american from Kansas. His parents separated when he was two years old. Obama lived with his grandparents in Honolulu. When he finished High School, he studied at Columbia University in New York. Obama got married in 1992. On January 20, 2009, he was sworn in as the 44th President of the USA. So far Obama has shown the courage of a great leader by restoring international confidence in the USA.