Although the term dates back to to early 1910s Germany, Abstract Expressionism was a post WWII artistic movement that occurred in American painting that was developed in New York. With roots in Surrealism, the style emphasizes dynamic, spontaneous and vigorous compositions. The movement’s name is derived from the combination of the German Expressionists’ emotional intensity and the anti-figurative works of European abstract schools such as Bauhaus. Pioneered by Jackson Pollock, Willem de Kooning, Franz Kline, etc. action painting is closely related to abstract expressionism.