Mark Twain, an American author, is renowned for writing "The Adventures of Tom Sawyer," published in 1876. This book follows the adventures of a young boy named Tom Sawyer as he navigates childhood in the fictional town of St. Petersburg, Missouri. The novel explores themes of friendship, adventure, and the moral dilemmas of growing up. Twain's wit, humor, and keen observations of human nature have made "Tom Sawyer" a classic in American literature and have secured Twain's place as one of the country's most celebrated writers.