Answer:
Mongols had built a reputation some areas would surrender without putting up a fight, others formed armies of thousands with their best weapons and men; but all were crushed once the Mongols arrived. The Mongols were ruthless killers and reduced the populations of areas greatly, caused people’s lives to be ruined; and were not even mentioned in the history of certain areas, because of the horrible things they caused. But despite all these things the “barbarians” caused, they also helped many areas to develop; and improve trade and many other factors.
Step-by-step explanation: