Well, I cant give you the answer, but I can tell you that the Religion started in Saudia Arabia... this should give you a pretty clear hint! ;)
Buongiorno Studente inglese, il mio nome è Ruby Roundhouse sono un insegnate di italiano e la risposta alla tua domanda è
I think the answer is C. too much power in the central government.
Diseases bcs the the conqueror and his men brought infections that the Aztecs did not know how to cure