During this period, Tarchuna overtook Caere and other Etruscan cities in terms of power and influence. In this period colossal walls were built around the city in response to threats from the Celts and from Rome. Tarchuna, not affected by Celtic invasions, finally colonised all its previously held territories in about 385 BC. This new flourishing state allowed a rapid recovery of all activities. Large burial monuments decorated by paintings, with sarcophagi and funerary sculptures in stone, reflect the eminent social position of the new aristocratic classes, but several inscriptions on walls and sarcophagi show the gradual process of an increasingly democratic transition was taking place.