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        | a group of people who have a complex and organized society within a culture |  | 
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        | an area of high, flat land |  | 
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        | a system of transporting water to crops |  | 
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        | a city that is an individual unit, complete with its own form of government andtraditions. |  | 
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        | area on Earth with common physical features |  | 
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        | a craftsperson such as a potter or weaver |  | 
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        | a huge, pyramid-shaped structure consisting of a series of stacked, rectangular platforms |  | 
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        | organized community with established rules and traditions |  | 
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        | a form of wedge-shaped writing used in ancient times |  | 
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        | a large territory consisting of many different places under the control of a single ruler |  | 
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        | the defeat of another group |  | 
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        | one person owning another person |  | 
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        | person born later into the same family |  | 
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        | exchange one kind of good or service for another |  | 
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