Crusades History 66 Church history 13 Knights and knighthood 5 Middle Ages 5 Historiography 4 Jews 4 more ... Christianity 3 Civilization, Medieval 3 Ethnic relations 3 History, Military 3 Persecutions 3 Relations 3 Religious aspects 3 Social conditions 3 Christianity and other religions 2 Epic poetry, Italian 2 Foreign relations 2 Historical fiction, Scottish 2 Imperialism 2 In literature 2 Influence 2 Islam 2 Military religious orders 2 Mudéjares 2 Nobility 2 Papacy 2 Social aspects 2 Social change 2 Social history 2 less ...