This document provides an overview of developments in art from 1960-1964, including the emergence of Pop Art in both the United States and United Kingdom. It discusses Clement Greenberg's theory of modernist painting and how artists like Roy Lichtenstein and Andy Warhol incorporated pop imagery and appropriation into their work. The document also covers the Fluxus movement, which aimed to blur boundaries between art and life through experimental performances and Happenings led by artists like Allan Kaprow and George Maciunas.