Crusades History 5 Christianity 1 Christianity and other religions 1 Church history 1 Cities and towns, Medieval 1 Civilization, Medieval 1 más ... Civilization, Western 1 Commerce 1 Death and burial 1 Influence 1 Islam 1 Islamic civilization 1 Islamic influences 1 Military religious orders 1 Navigation 1 Relations 1 Revenge 1 Shipping 1 Social aspects 1 Social conditions 1 Western influences 1 menos ...