Temujin is enthroned as Genghis Khan. At a kuriltai  (great assembly) Temujin is lauded as Genghis Khan, the “strong ruler” or perhaps the “oceanic ruler.” (Scholars wrangle over the exact translation.) At about the age of 40, Genghis is master of all the tribes in what is now Mongolia, an expanse about the size of Alaska. He sets to work fusing them into a single people—building an army, imposing uniform laws, establishing a written language.   © 1997 National Geographic Society. All rights reserved.