Samuel Langhorne Clemens, known by his pen name Mark Twain, was an American writer, humorist, entrepreneur, publisher, and lecturer. Born on November 30, 1835, in Florida, Missouri, Twain grew up in Hannibal, a place that would later serve as the backdrop for some of his most famous works. He is best known for his novels 'The Adventures of Tom Sawyer' (1876), 'Adventures of Huckleberry Finn' (1885...