It developed in NewYork
A painting movement in which artists typically applied paint rapidly, and with force to their huge canvases in an effort to show feelings and emotions, painting gesturally, non-geometrically, sometimes applying paint with large brushes, sometimes dripping or even throwing it onto canvas. Their work is characterized by a strong dependence on what appears to be accident and chance, but which is actually highly planned. Some Abstract Expressionist artists were concerned with adopting a peaceful and mystical approach to a purely abstract image.
Jackson Pollock (American, 1912-1956), Hans Hoffman (German-American, 1880-1966), De kooning and Rotho.