| A | B |
|---|
| migrate | to move from one place to another |
| bands | small groups of families that lived and worked together |
| cooperate | to work together |
| extinct | to no longer exist; die off |
| specialize | to work at only one job and get very good at it |
| tribe | groups, families, or clans that share land and their way of living |
| earthworks | large man-made mounds of earth |
| headwaters | the source of a stream or river |
| portage | an overland route |
| hereditary | passed down between family members |
