Classical league The first Achaean League became active in the fifth century in the northwestern Peloponnese. Its earliest organizational structure remains partly obscure, but new evidence has illuminated aspects of its government. A fragmentary inscription discovered at
Aegium, dating to the fourth or possibly the very beginning of the third century BC, attests to a developed federal system that included a
boule (federal council) and a board of
damiourgoi (federal magistrates). The ancient capital of the league was
Helike, but after the catastrophic destruction of that city by an earthquake and tsunami in 373 BC,
Aegium subsequently assumed that role.
Xenophon's
Hellenica reports that Achaea underwent a
democratic revolution in 367 and the previous ruling class was exiled. Although it was once widely claimed that
Alexander the Great dissolved the Achaean League in 324 BC, the passage in Hypereides (
Against Demosthenes 18) supposed to reference such a dissolution is now widely understood to be too ambiguous to support that interpretation. The idea is further undermined by the continued political activity of Achaea and
Arcadia during the
Lamian War, when they refused to join the Greeks while
Boeotia did support
Antipater. The league continued to exist into the early
Hellenistic period and is attested in 302 BC, when the Achaeans were listed among the members of the
League of Corinth revived by
Demetrius Poliorcetes. In the years following, Macedonian influence intensified in some Achaean cities while others became ruled by tyrants. This period of increasing external control appears to have been linked to Demetrius’ change in policy, signalled by his capture and fortification of Athens in 294 BC, with the planting of garrisons in Achaean cities likely occurring shortly thereafter.
Hellenistic league The regional Achaean League was revived in 281/0 BC by the communities of
Dyme,
Patrae,
Pharae and
Tritaea, joined in 275 by Aegium, which controlled the important
sanctuary of Zeus Homarios. The increased size of the league meant a bigger citizen army and more wealth, which was used to hire mercenaries, but it also led to hostility from the remaining independent Greek states, especially
Elis, the
Aetolian League and
Sparta, which perceived the Achaeans as a threat. Corinth was followed by
Megalopolis in 235 BC and Argos in 229 BC. However the league soon ran into difficulties with the revived
Sparta of
Cleomenes III. Aratus was forced to call in the aid of the Macedonian King,
Antigonus III Doson, who defeated Cleomenes at
Sellasia. Antigonus Doson re-established Macedonian control over much of the region. In 229 BC, the Achaean League participated in a
naval battle off the island of Paxos in a coalition with
Korkyra and the
Aetolian League, and were defeated by a coalition of
Illyrians and
Acarnanians; as a result, the Korkyreans were forced to accept an Illyrian garrison in their city, which was put under the command of Demetrius of Pharos. In 220 BC, the Achaean League entered into a war against the
Aetolian League, which was called the "
Social War". The young king
Philip V of Macedon sided with the Achaeans and called for a Panhellenic conference in Corinth, where the Aetolian aggression was condemned. After Aratus's death, however, the League joined
Rome in the
Second Macedonian War (200–196 BC), which broke Macedonian power in mainland Greece. The Achaean League was one of the main beneficiaries. Under the leadership of
Philopoemen, the League was able to
finally defeat a heavily weakened Sparta and take control of the entire Peloponnese. , 1870 The League's dominance was not to last long, however. During the
Third Macedonian War (171–168 BC), the League flirted with the idea of an alliance with
Perseus of Macedon, and the Romans punished it by taking several hostages to ensure good behavior, including
Polybius, the Hellenistic historian who subsequently wrote about the rise of the Roman Republic. In 146 BC, the league's relations with Rome completely collapsed, leading to the
Achaean War. The Romans under
Lucius Mummius defeated the Achaeans at the
Battle of Corinth, razed Corinth and dissolved the League, finally putting an end to the independence of
Ancient Greece from external rule and ushering in the
Roman era. G.T. Griffith has written that Achaean War was "a hopeless enterprise for the Achaeans, badly led and backed by no adequate reserves of money or men." In Athens, in AD 221–222, the koinon of Achaeans, when the was Egnatius Brachyllus, decided to send an embassy to the emperor
Caracalla == Government ==