Baseball is often referred to as America's pastime and has a rich history in the United States. The sport was popularized in the 19th century, with the formation of professional leagues like the National League in 1876. Major League Baseball (MLB) is the highest level of professional baseball, featuring teams from cities across the country. The game is played between two teams of nine players each, with the objective of scoring runs by hitting a ball and running around bases. Iconic events like the World Series showcase the best teams, while legendary players such as Babe Ruth and Jackie Robinson have left lasting legacies in the sport.