| A | B |
|---|
| *Incas | people of powerful south America empire during the 400s and 1500s |
| *Andes | a mountain chain of western south America. |
| *Cuzco | The capital city of the Incas empire located in present-day Peru. |
| *Census | an official count of people in a certain place at a certain time. |
| *Quipu | : group of knotted strings used by Incas to record information |
| *terraces | steplike ledges cut into mountains to make land suitable for farming |
| *Dense | crowded closely together |
| *Complex | Complicated , sophisticated |
| *Unify | link together |
