Auteur Theory emphasizes the director as the primary creative force behind a film. It suggests that a director's unique style, themes, and vision unify their body of work, elevating them from technician to artist. This approach has shaped film criticism and audience appreciation. The theory emerged in 1950s France through Cahiers du Cinéma critics like Truffaut and Godard. It gained traction in the US with Andrew Sarris's writings, coinciding with the decline of the Hollywood studio system and the rise of more personal filmmaking.