What was the Harlem Renaissance?

The Harlem Renaissance was when African American artists, writers, and musicians based in Harlem revealed the freshness and variety of African American culture. Popularity of these artists spread to the rest of society. The Harlem Renaissance was the result of the Great Migration. The leaders were Jacob Lawrence, Langston Hughes, Bessie Smith, Duke Ellington, and Louis Armstrong. 
I paraphrased all that from my notes in Social Studies.
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The social difference that caused sectionalism in the antebellum era would be c.)  north was disorganized. the north had slow population growth, where as the south had mass immigration.hope this really mark