fire
the wheel
writing
language
mathematics
music
art
candles
plumbing
science of gravity which enabled calculus so building around world was now safe and uniform measurements of weight which led to better economy and an accurate calendar
Pasteur theory of germs becoming reality so adios to spontaneous generation.
electricity
antibiotics
rubber
airplane
automobile
steel
microchip (have doubts on some things)
satellites
balance of power in government/democracy
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