Pop art emerged in the 1950s in both the UK and US as a reaction to post-World War II consumerism and mass media. It featured imagery from popular culture such as advertisements, comic books, and everyday commercial products. Major pop artists included Jasper Johns, who used flags and numbers in his work; Roy Lichtenstein, known for his comic book style using Ben-Day dots; Andy Warhol, who produced iconic pop images like Campbell's Soup cans through silkscreen printing; and Robert Rauschenberg, a pioneer of combining painting with found objects in his "Combines." While initially controversial, pop art is now one of the most recognizable art movements of the 20th century and continues to influence visual