The Aetolian League was a confederation of tribes in ancient Greece, primarily located in the region of Aetolia. Established in the 4th century BCE, it served as a political and military alliance among its member states. The League played a significant role in the Hellenistic period, often opposing the influence of larger powers like Macedonia and Rome. The Aetolian League was known for its democratic governance, allowing member states to participate in decision-making. It also engaged in various military campaigns and alliances, notably during the Social War against the Achaean League and in support of the Roman Republic during the Macedonian Wars.