Thales of Miletus
Egypt

Several ancient authors assume that Thales, at one point in his life, visited Egypt, where he learned about geometry. It is considered possible that Thales visited Egypt, since Miletus had a permanent colony there (namely Naucratis). It is also said Thales had close contacts with the priests of Thebes who instructed him, or even that he instructed them in geometry. It is also possible Thales knew about Egypt from accounts of others, without actually visiting it.
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