The "World Series" refers to the championship series of Major League Baseball (MLB) in North America. It is a postseason competition that determines the champion of MLB, featuring the winners of the American League and National League. Played in a best-of-seven format, the series takes place typically in October, culminating in a battle for baseball supremacy. While the name "World Series" suggests an international competition, it primarily involves teams from the United States and Canada. Its historical significance and excitement make it a major event in the sports calendar.