Plato, Socrates, Thales, Aristotle, Gorgias, Pythagoras, Thucydides
Cuneiform was used a lot for keeping records of business deals. It was one of the earliest writing systems that we know of. Cuneiform literally means wedge-shaped which is how they wrote. It was used around 3500-3000 B.C.
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Settlement societies were divided into groups according to the value of the crops they raised.