"All modern American literature comes from one book by Mark Twain called Huckleberry Finn", said Ernest Hemingway speaking about the great American classic by Mark Twain. The Adventures of Huckleberry Finn was written as a sequel to The Adventures of Tom Sawyer, which itself is considered as one of the greatest American classics. It tells the story of Tom Sawyer's friend Huck and the runaway slave Jim, and their exciting adventure as they travel down the Mississippi River. The book is replete with memorable characters and gripping action and presents a vivid picture of a young boy growing up in the late 19th century America.