20th-century poetry encompasses a diverse range of styles and movements, reflecting the rapid changes in society, culture, and technology. Key movements include Imagism, which emphasized clarity and precision, and Surrealism, which explored the unconscious mind. Prominent poets like T.S. Eliot and W.H. Auden experimented with form and language, often addressing themes of disillusionment and modernity. The century also saw the rise of confessional poetry, where poets like Sylvia Plath and Robert Lowell expressed personal experiences and emotions. Additionally, the influence of free verse allowed for greater flexibility in structure, leading to innovative expressions of thought and feeling throughout the century.