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.