California became the center of the entertainment industry in the 20th century with the development of film, radio, and television technologies. Although the first motion pictures were not made in California, experiments by Eadweard Muybridge in the 1870s proved that horses lift all feet off the ground when trotting, laying the foundations for motion pictures. In the early 1900s, many filmmakers moved to Los Angeles to escape control by trusts, and Hollywood established itself as the industrial center for film production through the 1920s as studios employed large staffs of writers, directors, actors and technicians.