-
Period: 250,000 BCE to 10,000 BCE
Paleolithic
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200,000 BCE
discovery of fire
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35,000 BCE
The weel
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Period: 10,000 BCE to 3500 BCE
Neolithic
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4000 BCE
apperance of writing
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3500 BCE
copper
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Period: 3500 BCE to 700 BCE
Age of metals
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1500 BCE
bronze
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700 BCE
iron
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Period: 700 BCE to 476 BCE
Old age
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240 BCE
Endless screw
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100 BCE
Pulley
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Period: 476 to 1453
Middle Ages
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700
paper
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1440
printing press
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Period: 1453 to
Modern age
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steam machine
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Period: to
Contemporary age
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electric battery
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light bulb
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automobile
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radio
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computer
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Period: to
Real world
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internet