Social Sciences. In short, a two-mode is a hybrid vehicle that can operate in two distinct ways (modes). The first mode works much like a regular full hybrid. It is the second mode that makes the difference--where the hybrid system can adjust varying amounts of engine and motor function to meet very specific vehicle/task/traffic requirements.
Twain's first book, The Innocents Abroad, was published in 1869, The Adventures of Tom Sawyer in 1876, and The Adventures of Huckleberry Finn in 1885. He wrote 28 books and numerous short stories, letters and sketches. Mark Twain passed away on April 21, 1910, but has a following still today.
Among his novels are The Adventures of Tom Sawyer (1876) and its sequel, Adventures of Huckleberry Finn (1885), the latter often called The Great American Novel. Twain was raised in Hannibal, Missouri, which later provided the setting for Tom Sawyer and Huckleberry Finn. After an apprenticeship with a printer, Twain worked as a typesetter and contributed articles to the newspaper of his older brother, Orion Clemens.