Hippocrates of Kos was a Greek physician who lived from about 460 B.C. to 375 B.C. At a time when most people attributed sickness to superstition and the wrath of the gods, Hippocrates taught that all forms of illness had a natural cause. He established the firstintellectual school devoted to teaching the practice of medicine. For this, he is widely known as the "father of medicine."
<span>i think is this one -adoption of a social caste system </span>
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The relationship with the Soviet Union changed because of rivalries over ideology and borders.
Relationship with the United States improved because the U.S. saw China as a useful partner in its conflict with the Soviet Union.
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Olympias was the eldest daughter of king Neoptolemus I of Epirus, the sister of Alexander I of Epirus, the fourth wife of Philip II, the king of Macedonia and the mother of Alexander the Great.