The Baseball World Series is an annual championship series in Major League Baseball (MLB) that determines the league champion. It typically takes place in October and features the champions of the American League and the National League. The series is played in a best-of-seven format, where the first team to win four games is crowned the champion. The World Series has a rich history, dating back to 1903, and is one of the most prestigious events in professional sports. It showcases the top talent in baseball and attracts millions of viewers, making it a significant cultural event in the United States.