Achaean Leagueball were an 
Ancient Greek city-stateballs Hellenistic-era confedration on the northern and central 
Peloponneseball. The first league was formed in the fifth century BC. The second Achaean Leagueball was established in 280 BC. The League represents the most successful attempt by the Greek city states to develop a form of federalism, which balanced the need for collective action with the desire for local autonomy. Through the writings of the Achaean statesman Polybius, this structure has had an influence on the constitution of the United States and other modern federal states. The first Achaean Leagueball became active in the fifth century in the northwestern Peloponnese. After the catastrophic destruction of the ancient capital Helike by an earthquake and tsunami in 373 BC, it appears to have lapsed sometime in the fourth century.
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