Langston Hughes, Duke Ellington, and Billie Holiday are all famous for their participation in the Harlem Renaissance. Each of these individuals contributed a significant amount to the revival of the African-American culture in the United States.
Langston Hughes was a famous writer/poet. One of his most famous poems, "I, Too", uses symbolism to explain how America mistreats African-American citizens. However, his poem developed a sense of hope, that one day African-Americans will be viewed as equals.
Duke Ellington and Billie Holiday were both musicians who helped to bring Jazz music to mainstream American society. Their performances helped to break down racial barriers, as white Americans began to appreciate their talents and abilities.
Variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.
