context: Major League Baseball is the highest level professional baseball league in the United States and Canada. To be clear, Major League Baseball is the organization that runs the National League and the American League, and has been developing since 1901 by a common organization (the National League has existed since 1876). . In 2000, assuming all responsibility for commissioner's MLB operations, the two leagues suspended separate entities. The MLB actually runs in one league, and in that function, the MLB, along with the NFL, NBA, and NHL, is considered one of the largest professional sports leagues in the United States and Canada. MLB currently consists of 30 teams. There are 29 teams in the US and one team in Canada. MLB also manages the World Baseball Classic with the International Baseball Federation.
question: When is the first major league open?
answers.text: 1901