Anderson, Andrayah During the 1920s, the growth in popularity of mass media such as radio and movies had what impact on the nation? It increased the income disparity in the nation as the new forms of media were too expensive for most people Reperpetuated a standardization of culture as people had access to the same information and entertainment. It exacerbated resional differences as availability of mass media was dependent on location It widened the racial divide as content was created by white entertainers exclusively.