Which statement correctly describes the conquests of the Mongol Empire?
A
The Mongols conquered a small area over a long period of time by using a great deal of violence and cruelty.B
The Mongols conquered a vast area over a short period of time by using a great deal of violence and cruelty.C
The Mongols conquered a small area over a short period of time by liberating the people that they conquered.D
The Mongols conquered a vast area over a long period of time by liberating the people that they conquered.