| A | B |
| Pope Urban II | pope who led the first crusade to regain the city of Jerusalem for Christians in 1096 |
| Levy | collect taxes |
| religious tolerance | policy of allowing people to worship as they choose |
| Crusade | holy war |
| Schism | split between Roman and Byzantine church |
| Saladin | an able Muslim General/leader who negotiated a truce with King Richard of England to allow Christian pilgrims into Jerusalem |
| Ferdinand and Isabella | King and Queen of Spain who imposed unity on the peoples of Spain and ended the tradition of religious tolerance in Spain |
| Reconquista | reconquering of Spain for Christianity |