Silent films were movies produced between 1894 and the late 1920s that had no synchronized recorded sound or spoken dialogue. Intertitles were used to convey context and dialogue. Silent films appealed to both the working class as they were accessible without reading, and the middle class as novels were adapted into films. As technology advanced, the film industry consolidated in Hollywood. German Expressionist films of 1919-1933 used experimental techniques to convey emotion through sets and acting.