Modern poetry emerged between 1900-1930 as a rebellious movement that allowed new concepts and writing forms. Modernism arose from transformations in Western society like modern industrialization and World War 1. It rejected religious and Enlightenment thinking. Modern poetry uses techniques like foregrounding to emphasize certain ideas or themes. It explores themes like the decline of tradition, poets as social outcasts, pessimism, and reduced interest in nature compared to earlier eras.