NATS 1775 Lecture Notes - Lecture 4: Working Animal, Blood Transfusion, Hypothesis

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This period of time was characterized by the development of urban civilizations fairly quickly. Geography: there were some sort of barrier such as mountains (brought people together) Simple agriculture was replaced by field agriculture. Higher levels of learning, technological achievements, scientific achievements, complex architecture were all characteristics. The majority of the power was held by the smallest groups of people. Most of the population was at the bottom of the hierarchy. This hypothesis makes a connection between the development of certain large scale technological systems, and the development of these social, economical and organized societies. Water became a precious commodity in these societies for two main reasons. People needed to control and have water because the new agricultural system required more water (as there was more population to feed). The building of large irrigation systems was meant to solve these problems for the people.

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