The Jews, like the other millet communities of the Ottoman Empire, were still considered a people of the book and protected by the Sharia Law of Islam. However, while the Jews were not viewed in the eyes of the law to be on an equal playing field with Muslims, they were still treated relatively well at points during the Ottoman Empire. Norman Stillman explains that the prosperity of medieval Jews was closely tied to that of their Muslim governors. Stillman notes that during the time between the 9th and 13th centuries when Jewish culture blossomed, "medieval Islamic civilization was at its apogee". Given their rampant persecution in medieval Europe, many Jews looked favorably upon millet."'