| A | B |
|---|
| How many years are in a decade? | 10 |
| What is a primary source? | First hand account |
| How many years are in a century? | 100 |
| How many years are in a millennium? | 1,000 |
| What is specialization? | Division of labor; JOBS |
| The Neolithic Era lasted | from around 8000 BCE to 4000 BCE. |
| What does B.C.E. stand for? | Before Common Era |
| Paleolithic" | means Old Stone |
| What does C.E. stand for? | Common Era |
| Ice Ages | glaciers formed and sea levels dropped, revealing a land bridge between Asia and North America. This led to people traveling all over the world. |
