| Term | Definition |
| economics | The study of the production, distribution and consumption of limited resources in a society |
| physical map | A visual representation of the characteristics and landmarks--such as mountains, river valleys, deserts, bodies of water, etc.--of an area |
| Great Rift Valley | Area in east Africa where archeological evidence shows human life began |
| Neolithic Revolution | The switch from nomadicaly hunting and gathering to domesticting animals and farming in permanent settlements |
| Subsistence agriculture | Self-sufficient farming in which farmers grow only enough food to feed the family and to pay taxes or feudal dues |
| Five Pillars of Faith | The basic beliefs of Islam: (1) Monotheism (2) Prayer 5x's daily (facing Mecca) (3) Alms (Charity) (4) Fasting during Ramadan (5) Hajj |
| Gupta Empire | Early northern Indian empire that experience a golden age, with great advances in math and science |
| Byzantine Empire | The empire formed when the Roman Empire split in two; spoke Greek; practiced eastern Orthodox Christianity |
| Feudalism | Political system characterized by a decentralized government and based on loyalty and service with a military elite class practicing a code of chivalry |
| Crusades | Series of wars between the Arab Muslims and European Christians over control of the Holy Land; caused an increase in trade between the two |