Uncle Sam, popular symbol for the United States, usually associated with a cartoon figure having long white hair and chin whiskers and dressed in a swallow-tailed coat, vest, tall hat, and striped trousers. His appearance is derived from two earlier symbolic figures in American folklore: Yankee Doodle, a British-inspired nickname for American colonials during the American Revolution, and Brother Jonathan, a rural American wit who, by surprising displays of native intelligence, always triumphed over his adversaries in plays, stories, cartoons, and verse.