| A | B |
|---|
| prehistory | period of time in the past before writing was invented |
| archaelogist | scientists who examine objects to learn about past people and cultures |
| oral traditions | stories passed down by word of mouth |
| history | recorded events of people |
| nomad | people who have no single, settled home and who travel from place to place in search of food |
| fertile | a good place to grow plants |
| domesticate | tame |
| social class | a group of people with a similar background, wealth and way of life |
| surplus | more than is needed |
| civilization | a society that is characterized by cities, art and architecture |
| irrigation | the practice of supplying land with water from another place |
| artisan | skilled worker |
| historian | a person who examines written records |
