Which artist made the concept of collage into a form of art in 1912?

Pablo Picasso helped establish collage as a fine-art technique around 1912, using pasted papers and other materials in Cubist works. Hanna Höch became known for photomontage later, while Antoni Gaudí and Marcel Duchamp are not the artists credited with introducing collage in this context. The correct choice is Pablo Picasso.

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