Expressionism and Fauvism emerged in the early 20th century, challenging artistic norms with bold colors and emotional intensity. These movements prioritized subjective experiences and inner feelings over realistic representation, using vivid hues and distorted forms to convey psychological states. Key figures like van Gogh, Munch, and Matisse pioneered these styles, influencing generations of artists. Their works explored themes of anxiety, alienation, and modern life, leaving a lasting impact on the development of abstract art and avant-garde movements throughout the 20th century.