Written in 1901
Written in 1939
Pictorialism (beginning in 1918): made up of films that focus mainly on manipulation of the film as image, in through camerawork, mise-en-scene, and optical devices.
Montage (beginning in 1923): at which point rhythmic and fast paced editing became more widely used.
Diffusion (beginning in 1926): at which point films and filmmakers began to pursue other stylistic and formal modes.
The Plow That Broke the Plains is a 1936 short documentary film which shows what happened to the Great Plains region of the United States and Canada when uncontrolled agricultural farming led to the Dust Bowl. It was written and directed by Pare Lorentz.