"Harlem Renaissance refers to an era of written and artistic creativity among African-Americans that occurred after World War I and lasted until the middle of the 1930s Depression. Harder - A major factor leading to the rise of the Harlem Renaissance was the migration of African-Americans to the northern cities. Between 1919 and 1926, large numbers of black Americans left their rural southern states homes to move to urban centers such as New York City, Chicago, and Washington, DC. This black urban migration combined with the experimental trends occurring throughout 1920s American society and the rise of a group of radical black intellectuals all contributed to the particular styles and unprecedented success of black artists. What began as a series of literary discussions in lower Manhattan (Greenwich Village) and upper Manhattan (Harlem) was first known as the 'New Negro Movement.' Later termed the Harlem Renaissance, this movement brought unprecedented creative activity in writing, art, and music and redefined expressions of African-Americans and their heritage."