User blog comment:Swg66/Army vs Army: Conquerors vs. Liberators/@comment-24.218.71.208-20110823033529/@comment-181289-20110823034914

Actully he started what would grow to be the second Largest Empire in History. The Mongol Empire grew to it's full size after his death. And greatest is really up a matter of opinion. Does an Empires size make it the greatest or what it achieved? It's subjective really.