Time and again, Rome was to be reminded of the Celtic peril. Between the first and second Punic wars, the Celts, reinforced from beyond the Alps, attacked Etruria and threatened Rome. Defeating them, the Consuls pushed north to subdue the Po Valley (222 B.C.). South of the river the Celts were expelled, and their place was filled by Roman colonists. The fortress cities of Placentia (Piacenza) and Cremona were founded on the right and left banks of the Po, and south-east of them Mutina (Modena). The Flaminian road was extended across the Apennines to Fanum, and thence to Ariminum (Rimini), thus connecting the two Italian seas. Hannibal’s invasion of Italy brought fresh disturbance, and when the war with him was over, Rome set herself to the final subjugation of the Celts north of the Po. Upon their submission the Latinization of the whole valley began, and advanced apace; but the evidence is scanty. Statius Caecilius, a comic Latin poet, was a manumitted Insubrian Celt who had been brought to Rome probably as a prisoner of war. He died in 168 B.C. Some generations after him, Cornelius Nepos was born in upper Italy, and Catullus at Verona; Celtic blood may have flowed in their veins. In the meanwhile the whole region had been organized as Gallia Cisalpina, with its southern boundary fixed at the Rubicon, which flows near Rimini. The Celts of northern Italy were the first palpably non-Italian people to adopt the Latin language. Second in time and thoroughness to their Latinization was that of Spain. Military reasons led to its conquest. Hamilcar’s genius had created there a Carthaginian power, as a base for the invasion of Italy. This project, accomplished by Hamilcar’s son, brought home to the Roman Senate the need to control the Spanish peninsula. The expulsion of the Carthaginians, which followed, did not give mastery over the land; and two centuries of Roman persistence were required to subdue the indomitable Iberians. So, in the end, Spain was conquered, and became a Latin country. Its tribal cantons were replaced with urban communities, and many Roman colonies were founded, to grow to prosperous cities. These were strongholds of Latin. Cordova became a very famous home of education and letters. Apparently the southern Spaniards had fully adopted the ways and speech of Rome before Strabo wrote his _Geography_, about A.D. 20. The change was slower in the mountains of Asturia, but quite rapid in the north-eastern region known as Nearer Spain, Hispania Citerior, as it was called. There, at the town of Osca (Huesca), Sertorius eighty years before Christ had established the first Latin school for the native Spanish youth.