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https://drive.google.com/file/d/0B1uki1nYxW-JUmFYZjdzYVhaLWM/view

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Sumerian city-states developed social orders with three social classes. People in each class took on more distinct rolls. An upper class consisted of the ruler, his top officials, powerful priests, wealthy merchants, and large landowners. The lowest class was made up of mostly slaves

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Once people realized that they should start keeping track of the events, occurrences, and goods that their civilization had, the priests made special schools to teach certain people to write and record all the things that took place in that society. These people were called scribes. Scribes were people that were trained to write and record events.

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Mesopotamia had many agricultural techniques that they used to turn Mesopotamia into a good farmland. One agricultural technique was irrigation. Irrigation is a system for watering crops. Another one was the plow. The plow was used to prepare the land that they were going to be farming on before they stared planting seeds.

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As city-states developed many conflicts came about. From these conflicts came wars. The leaders of these wars decided to stay leaders after the wars were done. From this came the idea of a new government where one person or king would control a city.

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After writing was invented, its use spread from one person to another. Each group that used a writing system, made it to fit their needs. In this way, writing went through a gradual evolution over time. Writing began as pictographs, or pictures that represent objects.

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https://drive.google.com/a/capousd.org/file/d/0B_spjXmOCQ8Nc2NjQWR6V2lNSlk/view?usp=sharing