Film editing involves cutting different sections of footage together to progress the storyline. Early films around the late 1800s had shots lasting around 1 minute before cutting. Montage editing, developed by Sergei Eisenstein, involves juxtaposing shots to convey themes and meaning. There are various types of cuts like match cuts, cross cuts and jump cuts that edit different shots together based on action, location, or time. Continuity editing became prevalent in classical Hollywood cinema in the 1930s-40s to provide spatial and temporal continuity through techniques like the 180-degree rule and shot-reverse-shot.