Original: Siena, like other Tuscan hill towns, was first settled in the time of the Etruscans (c. 900 BC to 400 BC) when it was inhabited by a tribe called the Saina.
Simplified: History - 900 to 400 BC: Siena, like other Tuscan hill towns were occuped by Etruscans that chaned the territoris with they big "technology" about irrigation and works with earth.