By extending the commonly accepted chronological and territorial boundaries of the period--to encompass Roman, Byzantine, Sassanian, and early Islamic cultures, from the middle of the third century to the end of the eighth--this guide makes new connections and permits revealing comparisons. Consult the article on "Angels" and discover their meaning in Islamic as well as classical and Judeo-Christian traditions. Refer to "Children," "Concubinage," and "Divorce" for a fascinating interweaving of information on the family. Read the essay on "Barbarians and Ethnicity" and see how a topic as current as the construction of identity played out in earlier times, from the Greeks and Romans to the Turks, Huns, and Saxons. Turn to "Empire Building" to learn how the empire of Constantine was supported by architecture and ceremony.