I never said that there were not wars between. Did you read my preveous post. I said that there were no more wars between the Illyrians and Epirotes then within clans in Epirus. Also it is a fact that the then king of Illyria helped install Pyrrhus to the throne not because he would gain something from it but because he fermly beleaved that he was the descendent of the great Achilles(which is fact). And Pyrrhus proved himself alright. He conqured Macedon, Aetolia, northen Peloponese, Sicily, And almost destroyed the Roman Republic. HE is the greatest hero of all and it's all because of the compassion of the king who treated him as he would his own children.
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And another thing: Illyria was almost never a singular state so any wars with greeks were certainly no more then pety rivalries between clans. For example Macedon had enormous wars with Illyrians but that's not to say that it compares to anything even close to the one between Athens and Sparta.