Complex sentence: She was born in Brooklyn and studied at Barnard College where she was a contemporary of Margaret Mead, and while still an undergraduate she showed remarkable skill as a poet, and at this time her poems began to be published.
Split into simpler sentences: She was born in Brooklyn and studied at Barnard College where she was a contemporary of Margaret Mead. While still an undergraduate, she showed remarkable skill as a poet, and at this time her poems began to be published.