| A | B |
| Civilization | Has cities, a central goverment, workers who do specialized jobs,and social classes |
| Irrigate | To supply dry land with water by usinf ditches and canals |
| Emperor | a ruler of widspread lands and groups of people |
| Dynasty | A series of rulers from the same family |
| Migration | A movement of people from one country or region to another to make anew home |
| Clan | Groups of families who claim a common ancestor |
| Cultural Diffusion | Spreading of ideas |
| Communist | a goverment that owns a country's large industries, businesses, and most of the land |
| Communes | Communities in which land is held in common ans where members live and work together |
| Dialect | Forms of a single language |
| Nomad | People who have no settled home |
| Homogeneous | Groups members are very similar |
| Ethnic goup | A group thatshares language, religion, and cultural tradition |
| Radical | Extreme |
| Free enterprise | This economic system allows people to choose their own jobs, start a private bussiness, and make a profit |
| Robot | computer driven machines that do tasks once done by humans |
| Subsidize | economic support |
| Incentive | benefits |
| Diversify | to add varity |
| Famine | a huge food shortage |
| Discrimination | unequal treatment |