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6th century BC: Information from Answers.com (6197 words) |
 | B.C., but Pythagoras demonstrates that in a right triangle (one with a 90° angle) the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides (Pythagorean theorem), a concept known to the ancient Chinese and Hindus and applied by 18th century |
 | B.C. The Etruscans are a civilized people who believe in an afterlife, but legend will relate the uprising to the rape of Lucretia, beautiful and virtuous wife of the Roman general Lucius Tarquinius Collatinus, by Sextus Tarquinius, a son of the king Tarquinius Superbus. |
 | Pisistratus, Tyrant of Athens in 561 BC, 559 BC–556 BC and 546 BC–528 BC. |
| Persia History Timeline (1956 words) |
 | 533 BC Cyrus crosses the Hindu Kush and receives tribute from the Indian cities of the Indus valley and establishes the twentith satrapy of Gandhara. |
 | 509 BC A democratic constitution is proposed by Kleisthenes, and is adopted at Athens. |
 | 390 BC Rome is captured and burned by the Gauls under the leadership of the chieftain Brennius. |