“ A common misconception is that the event was named after The New York World newspaper, which sponsored the games. However, historians trace the name to earlier 19th-century baseball guides that used grand titles.The historical context includes:The First Showdowns: In the 1880s, postseason matchups between the National League and the American Association were branded as the "World's Championship" to declare the best team in the country.The Modern Era: When the first modern series was played in 1903 between the Boston Americans and the Pittsburgh Pirates, the organizer (Pirates owner Barney Dreyfuss) officially called it a "World's Championship Series".The Scope: Because professional baseball leagues did not exist elsewhere at the time, winning this postseason series meant a team was realistically the best in the world.”