| A | B |
|---|
| The exchange of goods between people | trade |
| A culture that has developed systems of specialization, religion, learning, and government | civilization |
| An extra supply of something, such as crops that are not needed immediately for food | surplus |
| The use of skills and tools to meet practical human needs. It makes our life easier | technology |
| To train plants or animals to be useful to people | domesticate |
| The period of human prehistory that lasted from 12,000 years ago to about 6,000 years ago, during which people still depended mainly on stone tools and began experiment with agriculture | New Stone Age |
| a person of the Old Stone Age who met needs by hunting animals and gathering plants | hunter-gatherer |
| training to do a particular kind of work | specialization |
| The period of human prehistory that lasted until about 12,000 years ago, during which stone tools were to most common technology used by humans | Old Stone Age |
| the raising of crops and animals for human use | agriculture |
| a diagram that shows when events took place during a given period of time | time line |
| a Latin word, often abbreviated "c." that means "about" or "around." | circa |
