European theatre in the late 19th and early 20th centuries was a time of radical change. Industrialization, social shifts, and new philosophies sparked innovative theatrical movements like naturalism, realism, and symbolism. Playwrights like Ibsen, Chekhov, and Shaw tackled social issues head-on. Directors and actors developed new techniques to create more authentic performances. These changes laid the groundwork for modern theatre as we know it today.