| A | B |
|---|
| Constantinople | the capital of eastern roman empire and later of the byzantine empire |
| Constantine | an emperor of the roman empire and the founder of constantinople |
| Justinian | one of the greatest byzantine emperors |
| Justininan's Code | an organized collection and explanation of laws for use by the Byzantine empire |
| schism | a split, particularly in a church or religion |
| Muhammed | the prophet and founder of Islam |
| nomads | people with no permanent home, who move from place to place in search of food, water, or pasture |
| caravan | a group of traders traveling together |
| Mecca | an Arabian trading center and Muhammad's birthplace |
| Muslim | a follower of Islam |
| mosque | a Muslim house of worship |
| Quran | the holy book of Islam |
| Omar Khayyam | a Muslim poet, mathematician, and astronomer |
| caliph | a muslim ruler |
| Sufis | a mystical muslim group that believed they could draw closer to God through prayer, fasting, and a simple life |
