James Fenimore Cooper was an American writer born in 1789 who is known for being the first American author to achieve international literary success. He wrote numerous novels set in the American frontier and early 19th century, including the famous Leatherstocking Tales series following frontiersman Natty Bumppo. Some of his accomplishments include establishing the frontier and wilderness as themes in American literature, contributing different genres like the historical romance and sea novel, and creating one of the first iconic American heroes in Natty Bumppo. While some critics like Mark Twain attacked his works, most scholars agree he played an important role in early American literature.