Final answer:
The Palace of Soviets is designed in the Constructivist style, which originated in Russia in 1919 and rejected the idea of autonomous art. Constructivism favored art as a practice for social purposes and had a significant impact on modern art movements.
Step-by-step explanation:
The Palace of Soviets is designed in the Constructivist style. Constructivism was an artistic and architectural philosophy that originated in Russia in 1919. It rejected the idea of autonomous art and favored art as a practice for social purposes. The style had a significant influence on modern art movements of the 20th century.