Washington,D.C. is the capital of the USA with the population of about one million.It has many historical places.The Capitol,where Congress sits is the largest and tallest building.The White House is the residence of the President of the USA.Then comes New York,the largest city and seaport in the USA.It is the city of sky-scrapers.It is the heart of business and commercial life of the country.Chicago is the centre of heavy industry and Detroit produces millions of cars.It's also famous for its tinned meat industry.Los Angeles is famous for Hollywood, the centre of the US film business.