Paleolithic Age

The start of the Neolithic Revolution. C. Humans first appear. D. Early societies make simple tools ... urban communities were built using iron and steel tools . ... List two (2) ancient civilizations that began in river valleys. (2) Two of these four: Mesopatamia/Sumer River Valley, Egypt/Nile River Valley, Indus River Valley/India, and Huang ... ................
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