Which of the following was not a reason for the success of expanding the Muslim empire? A. Armies were discipline
B. Persecuted people welcomed Muslim invaders
C. Leaders highly skilled
D. Muslims were gods

D.

Explanation:

The Muslim empire came to rise in power from 632-700. After Muhammad, the founder of Islam, conquered Mecca by leading a conquest, he was able to unify much of Arabia under Islam. After his death in 632, many strong and highly-skilled leaders came to power who successfully led conquest and were able to spread Islam to Spain as well.

The reasons of successful expansion of Muslim empire includes disciplined army, people who were persecuted and were under political oppression welcomed Muslim invaders and got converted to Islam, and Caliphates, the leaders who rose to power afterr Muhammad were highly-skilled.

The fact which is NOT a reason for successful expansion of Muslim empire is in option D, that Muslims were gods. Muslims were not gods they believed in One god, Allah, whom they considered was on their side for successful victories in the war.

Therefore, option D is correct.

the reopening of american frontier

Explanation: