| Term 
 | Definition 
 
        | the use of skills and tools to meet practical needs |  | 
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        | Term 
 | Definition 
 
        | the time period 12,000 years or more ago |  | 
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        | Term 
 | Definition 
 
        | those who hunted animals and gathered plant foods for survival |  | 
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        | Term 
 | Definition 
 
        | the raising of crops and animals for human use |  | 
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        | Term 
 | Definition 
 
        | the time period from 12,000 to 6,000 years ago |  | 
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        | Term 
 | Definition 
 
        | to train something to be useful to people |  | 
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        | Term 
 | Definition 
 
        | an extra supply of something |  | 
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        | Term 
 | Definition 
 
        | the training of people to do particular kinds of work |  | 
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        | Term 
 | Definition 
 
        | a culture that has developed systems of specialization, religion, learning, and government |  | 
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        | Term 
 | Definition 
 
        | exchange of goods, boomed between city residents and visitors to the city |  | 
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 | Definition 
 
        | a diagram that shows when events took place over a given period of time |  | 
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        | Term 
 | Definition 
 
        | a Latin word meaning "about" or "around" |  | 
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