Which author is associated with modernist themes in poetry, especially in works like 'The Wasteland'?

The author associated with modernist themes in poetry, particularly in "The Waste Land," is T.S. Eliot, who is often connected with the works of William Butler Yeats. While Yeats is not the author of "The Waste Land," his poetry includes modernist elements and has significantly influenced the literary landscape in which modernist poets, including Eliot, emerged.

"The Waste Land," published in 1922, embodies key traits of modernism such as fragmentation, allusion, and a disillusionment with traditional values and forms. Yeats’s poetry, like Eliot’s, explores themes of existential despair, urban life, and the search for meaning in a chaotic world, making him a fitting representative in discussions of modernist poetry, despite not being the author of the specific work mentioned.

The other authors listed do not align with the modernist themes characteristic of the early 20th century. Gerard Manley Hopkins is known for his earlier use of form and meter rather than modernist experimentation, George Bernard Shaw is primarily a playwright focused on social critique rather than poetry, and Christina Rossetti, although a significant poet, is associated with the Pre-Raphaelite movement rather than modernism.