Feudalism started about A.D 700
Most importantly, Roosevelt announced his vision for the world, "a world attainable in our own time and generation," and founded upon four essential human freedoms: freedom of speech and expression, freedom of worship, freedom from want, and freedom from fear.
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Herophilos (335-280 BCE), who was the first to base medical conclusions on dissection of the human body and to describe the nervous system.
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Scientific knowledge can improve the quality of life at many different levels—from the routine workings of our everyday lives to global issues. Science informs public policy and personal decisions on energy, conservation, agriculture, health, transportation, communication, defense, economics, leisure, and exploration. Science helped us through stuff that got the impact that we have today without science we would actually be useless and it would have been way harder to live.