 At first, they had enemies in common with Rome in the Celts and Volsci, and this commonality of purpose led to the formation of a peace treaty with Rome in 354.Once these threats were removed, Samnium expansion brought them into conflict with Rome's growing influence in central Italy.Samnites were the only ones who possessed nearly equivalent power in Italy as to that of Romans; so that the Roman-Samnite wars determined which would be the leading power in Italy.