Terms : Hide Images
| 7106287761 | Desertification | The gradual transformation of habitable land into desert, caused by deforestation, overfarming and overgrazing, among other things. |  | 0 |
| 7106289899 | Division of Labor | Division of work into a number of separate tasks to be performed by different workers. |  | 1 |
| 7106290687 | Theocrats | Ruler in both religion and government. |  | 2 |
| 7106295345 | Indo-European | largest language family which makes up 48% of the world's modern languages. |  | 3 |
| 7106296083 | Feudalism | A system of government based on landowners and tenants. |  | 4 |
| 7106298441 | Environmental Degradation | Destruction of the natural environment. |  | 5 |
| 7106298747 | Barter | To trade and negotiate for goods and/or services. |  | 6 |
| 7106304452 | Golden Age | A period during which a society attains prosperity and cultural achievements. |  | 7 |
| 7106308957 | Papyrus | A reed plant that grew wild along the Nile used to make ancient Egyptian paper. |  | 8 |
| 7106311423 | Mandate of Heaven | In Chinese history, the divine approval thought to be the basis of royal authority. |  | 9 |
| 7106315006 | Deforestation | The removal of trees for land and lumber which can lead to erosion and desertification. |  | 10 |
| 7106317394 | Polytheistic | To believe in many deities. |  | 11 |
| 7106322048 | Ancestor Veneration | The practice of praying to one's ancestors. |  | 12 |
| 7106324073 | Alphabetic Script | A list of letters/symbols making an alphabet which may be used for one or more languages. The Phoenicians are known for one of the first. |  | 13 |
| 7106334056 | Empire | A society under an emperor, a dictator. |  | 14 |
| 7106338594 | Loess | Fine, yellowish-brown topsoil made up of particles of silt and clay, carried by the wind. |  | 15 |
| 7106339983 | Ziggurats | Temples built by Sumerians to honor the deities they worshiped. |  | 16 |
| 7106340940 | Cuneiform | A form of writing developed by the Sumerians using a wedge shaped stylus and clay tablets. |  | 17 |
| 7106341822 | Sanskrit | The ancient language of the Hindus. |  | 18 |
| 7106342621 | City-states | Large settlements such as Sparta and Athens which have their own governments and laws but are actually part of a larger country or society. |  | 19 |
