This early-1900s Paris art movement, started by Picasso and Braque before World War I, drew Mexican muralist Diego Rivera into its 'Salle 41' circle along with Foujita. Its biggest American collection is at the Philadelphia Museum of Art. Which movement, known for painting objects as flat shapes seen from many sides at once, do the two cities host?

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Accepted Answer

Cubism. Cubism changed Western painting between 1907 and 1914 by breaking up objects into flat shapes seen from many angles at once. Mexican muralist Diego Rivera tried Analytical Cubism early in his career before going back to Mexico and joining the muralist movement, and the biggest American collection of Cubist works is at the Philadelphia Museum of Art.