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Grinding Stone
beginnings of agriculture
(Neolithic Revolution)
Civilizations appear in Mesopotamia
Old Kingdom in the Nile River Valley is settled
Harappan civilization appears in the Indus River Valley
Civilizations appear along the Yellow (Huang He) River in China
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8000 BCE
5000 – 3100 BCE
2680 BCE
2500 BCE
2200 BCE
Grinding StoneCivilizations appear in Mesopotamia
Old Kingdom in the Nile River Valley is settled
Harappan civilization appears in the Indus River Valley
Civilizations appear along the Yellow (Huang He) River in China