| A | B |
|---|
| paleolithic age | old stone age |
| neolithic age | new stone age |
| nomad | moving from place to place |
| bronze age | complex civilizations start, metal tools used |
| hunter-gatherer | how people got food before farming |
| africa | where people started, spread out from there |
| rivers | geographic feature where many people first settled |
| slash and burn | early farming technique |
| domestication | taming animals |
| fire | this discovery helped people make food better |
| farming | started the neolithic revolution |
| government | characteristic of civilization |
| writing | characteristic of civilization, records for historians |
| drought | lack of rain, ruins crops |
| flood | too much rain, ruins crops |
