Bertolt Brecht's Epic Theatre revolutionized 20th-century drama, challenging traditional notions of theatrical realism. Developed in interwar Germany, it aimed to provoke critical thinking and social change through innovative techniques like the alienation effect and episodic structure. Epic Theatre rejected emotional catharsis in favor of rational reflection on social issues. Key elements included breaking the fourth wall, minimalist staging, and didactic elements like placards and songs. Brecht's approach influenced political and avant-garde theatre worldwide, shaping modern performance practices.