Match the terms to their definition. 1. Abner Doubleday founded in Cooperstown, NY 2. Alexander Cartwright first African-American to play major league professional baseball 3. Babe Ruth first baseball league for African-Americans 4. Baseball Hall of Fame an era in history depicted from 1920-1929 5. Jackie Robinson started the Knickerbocker Base Ball Club; true inventor of baseball 6. Negro League famous player during the Roaring '20s 7. The Roaring Twenties seen by some as the inventor of baseball