The basin of the Mississippi is the BODY OF THE NATION. All the other parts are but members, important in themselves, yet more important in their relations to this. Exclusive of the Lake basin and of 300,000 square miles in Texas and New Mexico, which in many aspects form a part of it, this basin contains about 1,250,000 square miles. In extent it is the second great valley of the world, being exceeded only by that of the Amazon. The valley of the frozen Obi approaches it in extent; that of La Plata comes next in space, and probably in habitable capacity, having about eight-ninths of its area; then comes that of the Yenisei, with about seven-ninths; the Lena, Amoor, Hoang-ho, Yang-tse-kiang, and Nile, five-ninths; the Ganges, less than one-half; the Indus, less than one-third; the Euphrates, one-fifth; the Rhine, one-fifteenth. It exceeds in extent the whole of Europe, exclusive of Russia, Norway, and Sweden. IT WOULD CONTAIN AUSTRIA FOUR TIMES, GERMANY OR SPAIN FIVE TIMES, FRANCE SIX TIMES, THE BRITISH ISLANDS OR ITALY TEN TIMES. Conceptions formed from the river-basins of Western Europe are rudely shocked when we consider the extent of the valley of the Mississippi; nor are those formed from the sterile basins of the great rivers of Siberia, the lofty plateaus of Central Asia, or the mighty sweep of the swampy Amazon more adequate. Latitude, elevation, and rainfall all combine to render every part of the Mississippi Valley capable of supporting a dense population. AS A DWELLING-PLACE FOR CIVILIZED MAN IT IS BY FAR THE FIRST UPON OUR GLOBE. Samuel Langhorne Clemens (November 30, 1835 - April 21, 1910), better known by his pen name Mark Twain, was an American author and humorist. He wrote The Adventures of Tom Sawyer (1876) and its sequel, Adventures of Huckleberry Finn (1885), the latter often called "The Great American Novel". Twain grew up in Hannibal, Missouri, which provided the setting for Huckleberry Finn and Tom Sawyer. After an apprenticeship with a printer, he worked as a typesetter and contributed articles to the newspaper of his older brother, Orion Clemens. He later became a riverboat pilot on the Mississippi River before heading west to join Orion in Nevada. He referred humorously to his singular lack of success at mining, turning to journalism for the Virginia City Territorial Enterprise. In 1865, his humorous story, "The Celebrated Jumping Frog of Calaveras County", was published, based on a story he heard at Angels Hotel in Angels Camp, California, where he had spent some time as a miner. The short story brought international attention, and was even translated into classic Greek. His wit and satire, in prose and in speech, earned praise from critics and peers, and he was a friend to presidents, artists, industrialists, and European royalty. Though Twain earned a great deal of money from his writings and lectures, he invested in ventures that lost a great deal of money, notably the Paige Compositor, a mechanical typesetter, which failed because of its complexity and imprecision. In the wake of these financial setbacks, he filed for protection from his creditors via bankruptcy, and with the help of Henry Huttleston Rogers eventually overcame his financial troubles. Twain chose to pay all his pre-bankruptcy creditors in full, though he had no legal responsibility to do so.