Complex sentence: Perry: 3-4; cf. Shucard: 9 In additon Countee Cullen was a very important man in the Harlem Renaissance being successful and writing mant poems that we familiarized ourselves with today and for many years to come.
Split into simpler sentences: Perry: 3-4; cf. Shucard: 9 In additon Countee Cullen was a very important man in the Harlem Renaissance. He was successful writing many poems that we familiarized ourselves with today and for many years to come.