Examine three technologies that have allowed humans to survive and thrive in the Nile River Valley.

Humans have survived and thrived in the Nile River Valley by using technology to alter the Nile River to meet their needs. Humans have used flood protection technologies like levees, embankments, canals, and aqueducts to control and divert the flow of water. Flood protection has created greater access to livable land and more transportation opportunities. Humans also have used technologies like dams and reservoirs to store water resources. These technologies have allowed for water conservation and recreational uses of water while also alleviating the threat of floods. Finally, humans have used the technology of dams to produce hydroelectricity from the Nile River and meet energy demands.

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- "the most famous structure by far at saqqara is djoser's step pyramid. dating from the 3rd dynasty (2667—2448 bc), it was the first all-stone complex ever built on earth."

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