
During the 1920s, modernism became the norm in the art world. Modern art is a representation of the world that is less than literal. Photography had been invented, so the need for realistic paintings was no longer there. Artists began coming up with new ways to show how they viewed the world. The painting on the right is Geopoliticus Child Watching the Birth of New Man by Salvador Dali.

Sources: http://www.allbuyart.com/art-movement-surrealism.asp
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