Modernism in literature emerged in the early 20th century, breaking from traditional forms and conventions. It reflected the rapid changes and uncertainties of the modern world through experimentation with language, form, and style. Key figures like T.S. Eliot, Virginia Woolf, and James Joyce pushed boundaries with innovative techniques. They explored themes of alienation, disillusionment, and the search for meaning in a fragmented world, responding to societal shifts and technological advancements.