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Aetolian League - football - was created in 1959.
There were several - Delian League, Peloponnesian League, Achaean League, Ionian League, Aetolian League, Beotian League etc, etc.
Aetolian War happened in -191.
Aetolian campaign happened in -426.
An Aetolian is a native or inhabitant of Aetolia, a mountainous region of Greece on the north coast of the Gulf of Corinth.