 Complete the following phrase:  The city of Patras has an important history of four thousand years. Patras has been inhabited since the prehistoric age and constituted an important centre of the Mycenean era. In the antiquity it was a leading member of the Achaean League. Patras reached the peak of its power in the Roman era, when an imperial colony was founded there by Augustus. In the Byzantine period it remained a commercial city. The town experienced repeated conquests from Franks, Venice, Byzantines and finally the Ottomans. Later on, it played a leading part in the 