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  -Thought to have given rise to the first written language
 -Was eventually absorbed into larger empires
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  -Consisted of Egypt and Nubia
 -Had less prominent cities, as they had a unified state
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  -Economy was largely based on the fishing industry
 -Did not rely on grain-based farming
 -Had few sculptures, drawings, and art
 -Did not have defensive walls and had little indication of warfare
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  Prime era for pharaohs and pyramid building
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  -2070-1600 (Xia Dynasty): Centralized state had formed
 -1600-1046 (Shang Dynasty): Enlarged the Chinese state
 -1046-771 (Zhou Dynasty): Created the Son of Heaven political idealogy
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  -Little evidence of a political hierarchy/centralized state
 -Suggested to have been controlled by a group of priests
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  -Economically based on irrigation agriculture and stock raising
 -Aristocratic social hierarchy
 -Imported goods from around the world
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  -Caused by the effect of civilization in that area (repeated irrigation, deforestation, etc.)
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  -May have created the first written language in the Americas
 -Sometimes considered to be the "mother civilization" of Mesoamerica
 -Its unique culture is thought to have influenced future civilizations