Romanticism emerged in the late 18th century as a reaction against Enlightenment rationalism and Neoclassical rules. Artists like Delacroix, Friedrich, and Turner championed emotion, imagination, and nature, using vibrant colors and expressive brushwork to convey mood and atmosphere. Key themes included the sublime, the hero, and the exotic. Romantic artists explored historical and mythological subjects, celebrated individual expression, and sought to evoke strong emotions. This movement paved the way for later developments in art, influencing Impressionism, Symbolism, and Expressionism.