The document discusses several aspects of social change in the United States during the 1920s, known as the "Jazz Age". It describes how flappers represented changing social norms by wearing shorter dresses and cutting their hair, challenging traditional values. It also discusses the mass migration of over 6 million people from rural to urban areas during this period, as well as the growth of suburbs and cities. Key cultural aspects like jazz music, movies, radio, and literature reflected and drove social change during the postwar period in America.