PRE-INDUSTRIAL AGE People discovered fire, developed paper from plants, and forged weapons and tools with stone, bronze, copper and iron (13h 48min, dec 7, 35000 y BC – 13h 30min, dec 2, 1699 y)
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13h 48min, dec 7, 35000 y BC
13h 30min, dec 2, 1699 y
~ 36725 years