Film Technology - 1920's

The first commercial screening of movies with fully synchronized sound took place in New York City in April 1923, they helped secure Hollywood's position as one of the world's most powerful cultural/commercial systems. It would still be seven years before talking pictures gained supremacy and finally replaced the silent era.

http://www.1920-30.com/movies/talking-pictures.html

The Jazz Singer, starring Al Jolson was the firsr movie with sound. Charlie Chaplin and Rudolph Valentino were tremendous movie box office draws. Walt Disney would produce his first cartoon, Alice's Wonderland. in 1926, the invention of Technicolor made movies more entertaining and memorable. Consequently, the movie industry became a major part of American industry in general.

Technicolor is the trademark for a series of color film processes pioneered by Technicolor Motion Picture Corporation (a subsidiary of Technicolor, Inc.). Technicolor was the second major color film process, after Britain's Kinemacolor, and the most widely used color motion picture process in Hollywood from 1922 to 1952. Technicolor became known and celebrated for its hyper-realistic, saturated levels of color, and was used commonly for filming musicals (such as The Wizard of Oz and Singin' in the Rain), costume pictures (such as The Adventures of Robin Hood and Joan of Arc), and animated films (such as Snow White and the Seven Dwarfs and Fantasia).