Islam History 22 Religious aspects -- 21 Islam -- 14 History -- 13 Caliphs 12 Islamic civilization 9 more ... Politics and government 8 Islamic countries 6 Leadership -- 5 Relations -- 5 War -- 5 Foreign relations 4 Islam and politics -- 4 Islam and world politics 4 Judaism -- 4 Judaism 3 Muslims 3 Apostasy -- 2 Biography 2 Christianity 2 Civilization, Arab -- 2 Dissertations 2 Economics -- 2 Immigrants 2 International relations -- 2 Islamic Empire -- 2 Islamic philosophy 2 Khaybar, Battle of, Khaybar, Saudi Arabia, 628 2 Malaysia -- 2 less ...