ACARNANIA, a district of ancient Greece, bounded on the west by the Ionian sea, on the north by the Ambracian gulf, on the east and south by Mt. Thyamus and the Achelous. Its most populous region was the plain of the Achelous, commanded by the principal town Stratus; its people long continued in semi barbarism, communication with the rest of Greece being impeded by mountain ridges and lagoons, but there were a few Corin thian colonies on the coast, founded in the 7th century B.C. ; they were ruined in the 5th, through Athenian intervention. In 391 the Acarnanians submitted to Spartan control; in 371, to Theban. In the Hellenistic age they were constantly assailed by their Aetolian neighbours. But they remodelled their ancient cantonal league, apparently after the pattern of Aetolia, and in the 3rd century they formed a close alliance with Philip V. of Macedonia in his Roman wars. For their sympathy with his successor Per seus they were deprived of their federal capital Leucas and re quired to send hostages to Rome (167 B.c.). The country was desolated by Augustus, who drafted its inhabitants into Nicopolis and Patrae. Acarnania took a prominent part in the national uprising of 1821 ; it is now joined with Aetolia as a province. Several ancient sites in Acarnania have well-preserved walls, especially Stratus, Oeniadae and Limnaea.