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|287 BC – 212 BC. Greek mathematician and engineer. Discovered Archimedes' Principle, invented "Archimedes' screw," and built defenses against the Romans for his city of Syracuse; killed by the Romans.

|287 BC – 212 BC. Greek mathematician and engineer. Discovered Archimedes' Principle, invented "Archimedes' screw," and built defenses against the Romans for his city of Syracuse; killed by the Romans.

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|[[Aristocracy]]

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|"Rule by the best": aristocrats generally wealthy and privileged. European feudal government resembled aristocracy, and some governments in ancient Greece were aristocracies.

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|[[Aristotle]]

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|384 to 322 BC. Greek [[philosopher]], student of [[Plato]] and tutor to Alexander the Great. Focused on experience with the physical world; studied biology and founded a school, the Lyceum, resembling a university with specimens and a library.

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