Compose a research paper on American and European documentary filmmakers and their films from 1920 to 1960.

American & European Documentary Film 1920 – 1939. Compose a research paper on American and European documentary filmmakers and their films from 1920 to 1960. Discuss the evolution of documentary filmmakers and their films. Discuss, in depth, the evolution of aesthetics, ethics, activism, filmic styles, and poetics.