The early years of entertainment studios date back to the late 19th and early 20th centuries, with the establishment of film production companies such as Thomas Edison's Black Maria Studio (1893) and the formation of Hollywood's first film studio, Paramount Pictures (1912). During this period, studios focused on producing short films, and later, feature-length movies. The 1920s saw the rise of the Hollywood studio system, with major studios like MGM, Warner Bros., and RKO dominating the industry.