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to use more land and produce extra crops, people built elaborate irrigation systems. this resulted in large food supply which can support larger populations and freed villagers to pursue other jobs.

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The maintenance of a history of one's activities, as financial dealings, by entering data in ledgers or journals, putting documents in files.

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a government system that controls the behavior of people around it. It works by means of certain rules of behavior that are. Complicated Institutions are Trade, Job Specialization, Socio - Economic Class, gender standing, and military conquest.

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New greed to the city. Food surpluses helped people find different jobs. People who had special skills such as merchants, traders, government, officials, teachers, principals, administration.

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advance cities are new use of tools, inventions and techniques for practical  or necessary purposes. Center of trade with a large population and an organized government. Examples like Tokyo, Japan , San Francisco, New York Time Square.