What factors caused the fall of the mongols' empire?

The mongol empire fell for many reasons including poor leadership following the death of Kublai Khan The rulers spent money unwisely making them raze taxes which in turn led to riots throughout the mongol empire. This led to the empire to getting smaller and smaller .The empire was also in so much debt and this led to riots and fall of the empire

because the vietnam war was fought in an especially brutal and untraditional way