| A | B |
|---|
| archaeologist | an expert who studies the past by examining objects that people have left behind |
| trade | the business of buying and selling goods or exchanging items |
| artifact | an object made or used by people in the past |
| prehistoric | before written history |
| geographer | an expert who studies and creates maps of Earth's natural and human-made features |
| nomad | one who moves from place to place with no permanent home |
| anthropologist | a scientist who studies human development and culture |
| resource | something that can be used to fulfill a need |
| Paleolithic Age | the first period of the Stone Age, called the Old Stone Age, from about 2 million years ago to around 8000 BCE |
| domesticate | to train a wild animal to be useful to humans |
| Neolithic Age | the second period of the Stone Age, called the New Stone Age, lasted from around 8000 BCE to 3000 BCE |
| Fertile Crescent | an arc-shaped region in Southwest Asia with rich soil |
| hominid | an early ancestor of humans |
| migrate | to move from one geographic location to another |
| agriculture | the business of farming, growing crops and raising animals |
| historian | an expert who studies and records the past by examining documents |
