Final answer:
The new group of writers and jazz music had a significant impact on American culture in the 1920s and post-World War II era. Writers explored themes of identity and racial struggles, challenging societal norms. Jazz music brought a unique sound and represented the rebellious spirit of the time.
Step-by-step explanation:
The impact of new groups of writers and new jazz music on American culture can be seen in their contributions to the cultural and social changes of the time. The new group of writers, including the Lost Generation and Harlem Renaissance authors, explored themes of identity, racial struggles, and the changing attitudes of the post-World War I era. Their works challenged societal norms and provided a snapshot of the experiences and perspectives of different groups of people in American society.
Jazz music, which emerged from African American communities, brought a unique sound and rhythm to American culture. Jazz artists like Duke Ellington and Cab Calloway became influential figures, performing in famous clubs like the Cotton Club. Jazz music represented the rebellious spirit of the Jazz Age, offering an escape from the conventions of traditional music and attracting a diverse audience.