| A | B |
| Allah | Arabic for God |
| 100 Years War | series of wars waged between 1337-1453. |
| Islam | Religion founded by Muhammed |
| Hijrah | journey of Muhammed and his followers |
| Haij | Pilgrimage to Makkah. |
| Shari'ah | Muslim laws that guide behavior |
| Shia | Muslim Group that accepts the descendants of Ali. |
| Sunni | Muslim group that accepts Umayyads |
| Dowry | a gift of money or property at the time of marriage. |
| Astrolabe | navigational tool used by sailors |
| Crusades | military action to gain back the holy lands from Muslims. |
| Parliament | representative form of government with 2 knights, 2 nobles, and 2 townspeople. |
| Monastcism | living the life of a monk. |
| Missionaries | people that spread the word of religion. |
| Feudalism | system where land is given for service. |
| Knights | armored cavalry soldiers in the middle ages. |
| Feudal Contract | describes the terms between a lord and his vassal. |
| Chivalry | code of conduct upheld by knights. |
| Magna Carta | charter that limited power of the king. |
| Patriarch | head of the Eastern Orthodox Church |
| Serfs | peasants legally bound to the land and ruled by lords. |
| Money Economy | economy that uses money rather than barter |
| Bourgeoisie | the middle class |
| Sacraments | Christian rites. |
| Heresy | going against teachings of the church. |
| Relics | bones or objects connected with saints. |
| Theology | the study of religion. |
| Vernacular | the everyday language of people in a particular area. |
| Anti-Semetism | discrimination against Jews. |
| Quran | Holy book of Islam |