History of the Peloponnesian War

Now, as time went on, the city of Epidamnus became great and populous;

but falling a prey to factions arising, it is said, from a war with her neighbors the barbarians, she became much enfeebled, and lost a considerable amount of her power.

The last act before the war was the expulsion of the nobles by the people. The exiled party joined the barbarians, and proceeded to plunder those in the city by sea and land;