Final answer:
World War I, Freudian psychology, and new science were pivotal in shaping modern art.
Explanation:
The Shaping of Modern Art
World War I, Fruedian psychology, and new science all played significant roles in shaping modern art. The disruption and sense of unease following World War I led to radical movements such as Cubism, Dada, and Surrealism, which challenged traditional artistic norms and introduced innovative techniques.
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