In discussing Islamic religious beliefs, scholars frequently speak of the power of Islam to unify. Looking at the early history of Islam and at its later manifestations in the worlds of the Mongol Khanates, write an essay in which you define at least 4 different ways in which Muhammad as a prophet and Islam as a faith were able to work as a unifying force.  Compare at least 3 of your 4 points about Islam to what you have learned about one of the other 2 Abrahamic faiths (Christianity and Judaism).   Of course you need to back your observations up with clear and precise references to textbook, texts, and lectures.