| A | B |
| Stone Age | a period of time during which early humans made lasting tools and weapons mainly from stone, the earliest period of human culture |
| Nomad | a person who has no settled home |
| Fertile | rich in substances plants need to grow well, describes soil and land |
| Domestication | to adapt wild plants for human use, tame wild animals |
| Irrigation | supplying land with water through a network of canals |
| Civilization | a society with cities, a central government, job specialization and social class |
| Surplus | more than is needed |
| Artisan | a worker who is especially skilled at crafitng items by hand |
| Social Class | a group of with similar backgrounds incomes and ways of living |