Final answer:
Alfred Stieglitz played a pivotal role in promoting photography as a fine art and was a key figure in the New Objectivity movement.
Explanation:
Alfred Stieglitz emerged as the flag-bearer of the New Objectivity, a movement that emphasized realistic documentation in photography. Stieglitz was known for his role in promoting photography as a fine art through his galleries and publications, contributing to its acceptance in the art world. He introduced many European avant-garde artists to the U.S. art scene and played a significant role in the Photo-Secession movement.
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