What was the effect of movies and radio on the popular culture in the 1920s?

In the 1920s, movies and radio revolutionized popular culture by creating a shared national experience and promoting new forms of entertainment. The rise of Hollywood films introduced glamorous lifestyles and iconic figures, influencing fashion and social norms. Meanwhile, radio broadcasts brought music, news, and live performances directly into homes, fostering a sense of community and connecting diverse audiences. Together, these mediums helped shape modern consumer culture and contributed to the emergence of a more unified national identity.