10 points and brainliest please What is significant about the Harlem Renaissance?

A. African American artists, writers, and musicians inspired one another.
B. It was a movement that introduced the world to jazz.
C. African Americans were able to become film stars for the first time.
D. The film industry made the first movie to be made in color.

What are the biggest challenges facing the average american citizen today? explain.

The rise of advertising in the 1920s. i am good with seeing how advertisements shape the roaring twenties and how it developed a new way of life through modern days. but i am not sure what the details of advertising in the 1920s were. if possible can you send me links (preferrably credential links) to sources that maybe show like the first company to start advertising through the radio, how advertising benefits (statistics graphs), etc.

What restrictive measure required voters to pay to vote