Hello. You did not enter the text to which this question refers, which makes it impossible for it to be answered accurately. However, I would like to try to help you in the best possible way.
The Harlem Renaissance was very significant for African American culture and especially for black artists, who saw in themselves and in their communities inspirations to present works of great artistic value and social impact. In this way, we can consider that the author of the text cited specific artists to develop the idea that they already lived African-American culture, which was essential to create such true works about culture in Harlem.