Manlius led the Roman right; Publius Decius, the people’s consul, the left. The battle was severe, and bravely fought on both sides; but, at length, the Latin right wing prevailed, and the Roman left began to give way. Decius instantly called the chief pontiff—for, as a plebeian, he himself was ignorant of the ceremonies by which the gods must be addressed—and bade him dictate the form of words in which he was to devote himself to death. By the direction of the pontiff, he wrapped his toga around his face, set his feet upon a javelin, and repeated the imprecation.[68] Then sending his guard of lictors to the other consul to announce his fate, he mounted his horse, plunged into the host of the enemy, and was quickly slain. The Latins saw and understood the act, but they still fought fiercely, like men who struggled against fate. So equally matched were the main forces, that Manlius gained the day at last only by bringing on the poorer supernumeraries, whom he had armed to constitute a double reserve. =72.= A second battle was much more easily won, and the Latins had no strength to rally for a third. The Latin League was wholly broken up, Roman law every-where took the place of local constitutions, and some cities even became Roman colonies. The Latins were one in race and language with Rome, and their transient hostility was exchanged for a close and permanent alliance. The battle under Mount Vesuvius was one of the most important in the history of Rome, for by securing the sovereignty of Latium, it opened the way to the conquest of the world. =73.= For the next twelve years the Romans were unable to undertake any great foreign war. Italy was invaded by Alexander of Epirus, uncle of the great Macedonian conqueror, B. C. 332. His quarrel was with the Samnites, but if his success had been equal to his ambition, no engagements with the Romans would have prevented his overrunning the whole peninsula. He was defeated and slain, however, in 326 B. C., and the Romans immediately prepared for a renewed contest with the Samnites, which was to last twenty-two years, B. C. 326-304. The two chief states of Italy fought for sovereignty, and their allies included almost all the other nations in the peninsula.