Major League Baseball (MLB) is a professional baseball organization in North America, consisting of two leagues: the American League and the National League. Founded in 1869, it is one of the oldest sports leagues in the world. MLB features 30 teams, with 29 located in the United States and one in Canada. The season typically runs from April to October, culminating in the World Series, where the champions of both leagues compete for the championship title. MLB is known for its rich history, iconic players like Babe Ruth and Jackie Robinson, and its significant cultural impact in the United States.