History -- 125 History 106 Caliphs 28 Islam -- 22 Islamic civilization 16 Politics and government 16 Arabs -- 12 more ... Islam 11 Umayyad dynasty 11 Abbasids 10 Biography 10 Intellectual life 10 Historiography 8 Caliphate 7 Crusades 7 Islam and state 7 History, Military 6 Kings and rulers 6 Biography -- 4 Description and travel 4 Genealogy 4 Islamic civilization -- 4 Missions -- 4 Muslims -- 4 Political science -- 4 Religious aspects -- 4 World history 4 Crusades -- 3 Fatimites -- 3 Relations -- 3 less ...