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Irrigation

World Civilizations Notes Chapter 1

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World History
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Civilizations
Western Asia
Middle East
Culture
Sumer
Cradle of civilization
Mesopotamia
River valley civilization
Bronze Age
Neolithic Revolution
Irrigation
Technology

Chapter 1: From Human Prehistory to the Early Civilizations Human Life in the Era of Hunters and Gatherers Hunting and gathering economies dominated human history until 9000 BCE helped propel migration over most of the lands on earth Human origin = 2.5 million years ago 1/4000 of earth?s existence; 5 minutes / 24-hour day Drawbacks: aggressive against their own kind dependent babies limited the adult women back problems due to the upright stature death fears tensions Achievements: grip reproduction omnivores facial expressions aids communication distinctive brain & speech culture Human Life Before Agriculture Human societies spread widely geographically Tool use gradually improved in the hunter-gatherer economy
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