Punch-Drunk Love was distributed by an American film studio.
 Murnau and Fritz Lang, in many ways inspired by the meteoric wartime progress of film through Griffith, along with the contributions of Charles Chaplin, Buster Keaton and others, quickly caught up with American film-making and continued to further advance the medium
 Directors developed a theory of montage, beginning with Eisenstein and the complex juxtaposition of images in his film Battleship Potemkin

