This polity deposed the Spartan king Demaratus by declaring he was an illegitimate son after being bribed by Cleomenes I. The taxation of this polity by one city led to that city’s destruction in a siege during which its water supply was poisoned by hellebore. Following the 279 BCE Battle of Thermopylae, a failed attack on this polity was launched during a snowstorm by a Gallic army led by Brennus. This polity was sacked by the Phocians during their conflict against the (*) Amphictyonic League. The tyrant Polyzalus of Gela commissioned a bronze sculpture depicting a charioteer that was named (10[1])for this polity. The oldest known examples of notated music are two Hymns named for this polity. After visiting this polity, Croesus of Lydia was allegedly told that his invasion of Persia would “destroy a great empire.” For 10 points, name this polity whose Temple of Apollo was home to a namesake Oracle. ■END■