The mongols under genghis khan carved largest empire    in the world history .. yet the mongols did not build the places & slept  in tents ...after his death the mongols extended to russia ,china ,west &central asia..... 1st they have good administrative bt later  they have difiencient   administrative system ....they were essentially pastoral nomads ..the spread diease among the livestock led to a great diaster & deafeat at hand of other  rulers.......
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plzzzz >>_
Nice gud:)