Without a lot of knowledge about black communities in the 1920's, I'd have to say it be the creation of a song genre, jazz.
D. Marco Polo
Explanation: All of the others where conquistadors from europe who were enlisted by royal families
The answer you are looking for is "genes".
The bill of rights are the first 10 amendments and it gives us americans civil rights like for example freedom of speech, freedom to press, freedom of religion, etc.