A General Survey of USAPart 1 General Introduction of USNational Flag National Flag: The number of the stars 50 stars represent the 50 states of America. 13 stripes represent the first 13 states that used to be the colonies.Important Facts About USA Full country name:TheUnitedStatesof America(USA) Population:275,000,000 Area: 3,618,000 sq miles (9,370,000 sq km).The 4th largest in the world. Capital city: Washington, DC (pop: 607,000) People: Caucasian （高加索人，白种人 ）(74%), African American (12%),
