Every era's biggest sport has been shaped by the dominant form of media at the time, according to @​garyvee. "The biggest sports in America in the 1920s and 30

Every era's biggest sport has been shaped by the dominant form of media at the time, according to @​garyvee. "The biggest sports in America in the 1920s and 30s were horse racing, boxing, and baseball. Those sports were very good on radio, but football is not a great radio sport. If you look at the…