The Ottomans Were Successful in Their Conquests,at Least in Part,because

Multiple Choice

The Ottomans were successful in their conquests,at least in part,because:

A) they brought new ways of fighting to Europe with their introduction of stirrups for their horses.
B) they enlisted the services of Anatolian mercenaries.
C) they had captured a number of important cities and continued to do so under the employ of the Byzantine emperor.
D) their caliph married into the Byzantine royal family and thus had Byzantine support.
E) they promised full citizenship and a job to everyone who surrendered to them.