The Mongols who inherited Genghis Khan's empire exercised a determined drive to move products and commodities around and to combine them in ways that produced entirely novel products and unprecedented invention. When their highly skilled engineers from China, Persia, and Europe combined Chinese gunpowder with Muslim flamethrowers and applied European bell-casting technology, they produced the cannon, an entirely new order of technological innovation, from which sprang the vast modern arsenal of weapons from pistols to missiles. While each item had some significance, the larger impact came in the way the Mongols selected and combined technologies to create unusual hybrids. The