Complex sentence: Susan Cheever (born July 31,1943), an American author,, is a prize-winning best-selling writer well-known for her memoir, her writing about alcoholism, and her intimate understanding of American history.
Split into simpler sentences: Susan Cheever (born July 31,1943) is an American author. Prize-winning best-selling writer well-known for her memoir, her writing about alcoholism, and her intimate understanding of American history.