Which art movement did Georgia O'Keeffe help introduce to the United States?

Georgia O'Keeffe helped introduce American modernism to a broad United States audience.

American modernism was not a single fixed style. It included artists who challenged academic conventions through abstraction, simplified forms, unusual viewpoints, and attention to contemporary life. O'Keeffe became especially known for making natural subjects—flowers, bones, rocks, and landscapes—appear newly unfamiliar through cropping, enlargement, and reduction of detail.

Her work is often labeled abstract, but she did not abandon recognizable subjects entirely. She moved between abstraction and representation throughout her career, and she resisted being reduced to a single category. Alfred Stieglitz's exhibitions and promotion helped bring her work to public attention, while her later New Mexico paintings gave American modernism a distinctive Southwestern vocabulary. Calling her an Abstract Expressionist would be historically inaccurate: that movement emerged later and is associated with artists such as Jackson Pollock and Mark Rothko.