Uncle Sam, for one, is an iconic figure in American culture. He is a personification of the United States government and is often depicted as a tall, white-haired man wearing a red, white, and blue top hat, white stars and stripes vest, and blue trousers. He is usually accompanied by the phrase 'I Want You' which was used in a World War I recruiting poster. Uncle Sam has been used to represent the United States since the War of 1812 and is still used today in popular culture. The term 'Uncle Sam' is derived from the initials U.S., which stands for United States.