1. Romanticism emerged in the late 18th century as a break from rationalism and empiricism. It declined in faith in social institutions and the hierarchical class system. 2. The middle class began to rise with the development of manufacturing and industrialization, which led to new approaches in science, biology, class, and race that challenged middle-class values. 3. Romantic poets explored imagination and themes of nature, the primitive, and the past, which engendered a form of alienation described in social protest poetry.