following period Rome experiences an unexpected prosperity because
of its unique location on the Tiber, which was navigable from
Ostia up to the Tiber- island in Rome. Ostia's fate was inextricably
bounded up with Rome.
During the fourth century BC Rome gets invoIved in several naval
wars. From now on Ostia starts to play a important role as a military
harbour. When, in 267 BC Rome installed a new naval magistracy,
one of the officials was permanently seated in Ostia (Lydus).