For 10 points, name this polity centered in the northern Peloponnesian and rival of the Aetolian League.
The second version of this polity lost at Caphyae because they sent their thureos wielding troops to follow an enemy up a mountainside. The first version of this polity was dissolved by Antigonus II Gonatus. This polity had unpaid magistrates, who were elected by a general assembly. Ptolemy III Euergetes stopped sending aid to the second version of this polity after the citizens of Megalopolis pressured it to ask Antiochus III Doson for help. That decision by Aratus of Sicyon led to the fall of the reformed Sparta under Cleomenes III. This polity was neutral as the Romans conquered Macedonia, but later, 1,000 members from this polity were forced to be hostages to Rome, including Polybius. Although not just one city, the final end of this polity came at the hands of Lucius Mummius who sacked Corinth. For 10 points, name this polity centered in the northern Peloponnesian and rival of the Aetolian League.
The second version of this polity lost at Caphyae because they sent their thureos wielding troops to follow an enemy up a mountainside.
{Achaean} League