Pop Art started in London in the mid-1950's. They called it Propaganda Art instead of Pop Art. This style of art came to the United States in the mid-1960s. Pop Art in the United States was an expression of the optimistic spirit of the 1960's.
Pop art was a descendant of Dada, a nihilistic movement current in the 1920s that ridiculed the seriousness of contemporary Parisian art and, more broadly, the political and cultural situation that had brought war to Europe. Marcel Duchamp, the champion of Dada in the United States, who tried to narrow the distance between art and life by celebrating the mass-produced objects of his time, was the most influential figure in the evolution of Pop art. Other 20th-century artists who influenced Pop art were Stuart Davis, Gerard Murphy, and Fernand Léger, all of whom depicted in their painting the precision, mass-production, and commercial materials of the machine-industrial age. The immediate predecessors of the Pop artists were Jasper Johns, Larry Rivers, and Robert Rauschenberg, American artists who in the 1950s painted flags, beer cans, and other similar objects, though with a painterly, expressive technique.