Artists of the second half of the twentieth century turned away from high art of great quality as their attention increasingly focused on popular culture.

no because we were not ready for war

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.