The history of horror films spans over a century, beginning in the late 1890s with early silent films depicting supernatural events. The genre evolved throughout the 1900s with themes often reflecting the social and political climate of the time. Key developments included the introduction of sound in the 1930s, rise of slasher films in the 1970s-80s, and remakes becoming popular in the 2000s. Famous films, actors, and directors have helped define eras and subgenres within the horror tradition.