History -- 48 History 42 Islamic Empire -- 25 Caliphs 13 Islamic civilization 13 Islam -- 12 Arabs -- 7 more ... Caliphs -- 6 Abbasids 5 Biography 5 Intellectual life 4 Arabian Peninsula -- 3 Biography -- 3 Fatimites 3 Islamic Empire 3 Islamic civilization -- 3 Islamic countries -- 3 Umayyad dynasty 3 World history 3 Ayyubids 2 Civilization 2 Civilization, Arab 2 Civilization, Arab -- 2 Description and travel 2 Economic conditions 2 Intellectuals -- 2 Islam 2 Kings and rulers 2 Mahdi 2 Mahdism 2 less ...