The Umayyad Caliphate: The History and Legacy of the Second Islamic Kingdom Established After Muhammad's Death

The split between the two forms of Islam was already in the process of forming upon the death of the Prophet Muhammad. Muhammad had constructed around himself not only a potent new religious movement but also a powerful young state called the Ummah (the "Community" for lack of a better translation). Belonging to the Islamic faith also meant belonging to the Ummah, which was governed by its own laws and had many of its own institutions. In his own lifetime, Muhammad had ruled the Ummah throu...