Once Genghis Khan was made ruler of all Mongols in 1206, the Mongols quickly grew to become one of the largest empires in world history. WatchMojo explores the rise and fall of this one-time world empire.
Michael Phelps Quietly Tied the Knot in June
Martha Stewart's Hilarious Confession on 'Ellen'
Best Halloween Costumes From 'Today Show'
Felicity Jones Almost Killed Tom Hanks