Supporters of art during the renaissance were called

They were called Patrons. 

(I hope this helps you a lot! :) Hope you have a nice day!)

Just think, why was it effective? -it appeled to critics because it was written well, that made it noticeable to the public including the white population-it was also recognizable to the african americans because it was about their heritage.-it was powerful just keep finding more points and elaborate on them. message me if you need more