Caliphs History -- 40 History 17 Islamic Empire -- 13 Islam 12 Fatimites 9 Umayyad dynasty 6 more ... Islamic civilization 4 Kings and rulers 4 Civilization 3 Islamic Empire 3 Leadership -- 3 Religious aspects -- 2 Umayyad dynasty -- 2 622-661 1 Abbasids 1 Alids 1 Arabia 1 Arabic literature 1 Arabs -- 1 Ayyubids 1 Biography -- 1 Caliphate 1 Caliphate -- 1 Caliphs -- 1 Civilization, Arab 1 Dissertations 1 Dissertations, Academic 1 Islam -- 1 Islamic countries -- 1 less ...