In response, the Achaean League in 146 BC mobilized for a new war against Rome. This is sometimes referred to as the Achaean War, and was noted for its short duration and its timing right after the fall of Macedonia. Until this time, Rome had only campaigned in Greece in order to fight Macedonian forts, allies or clients. Rome's military supremacy was well established, having defeated Macedonia and its vaunted Phalanx already on 3 occasions, and defeating superior numbers against the Seleucids in Asia. The Achaean leaders almost certainly knew that this declaration of war against Rome was hopeless, as Rome had triumphed against far stronger and larger opponents, the Roman legion having proved its supremacy over the Macedonian phalanx.Polybius blames the demagogues of the cities of the league for inspiring the population into a suicidal war. Nationalist stirrings and the idea of triumphing against superior odds motivated the league into this rash decision. The Achaea League was swiftly defeated, and, as an object lesson, Rome utterly destroyed the city of Corinth in 146 BC, the same year that Carthage was destroyed. After nearly a century of constant crisis management in Greece, which always led back to internal instability and war when Rome pulled out, Rome decided to divide Macedonia into two new Roman provinces, Achaea and Epirus.