Georgia O'Keeffe made significant artistic contributions to the American modernism movement. Renowned for her large-scale paintings of flowers, landscapes, and the American Southwest, O'Keeffe’s work is characterized by bold colors, simplified forms, and abstract compositions. She is often regarded as the "Mother of American Modernism," influencing generations of artists by breaking traditional boundaries and emphasizing personal expression through art. O'Keeffe's unique style and vision challenged conventional notions of femininity in art, making her an iconic figure in American art history.