The mysterious invaders proved to be two Germanic tribes, the Teutones and Cimbri, the vanguard of that great German migration which was destined to change the face and history of Europe. These intruders were seeking new homes. They carried with them, in rude wagons, all their property, their wives, and their children. The Celtic tribes of Gaul were no match for the newcomers, and fled before them as they advanced. Several Roman armies beyond the Alps were cut to pieces. The terror at Rome was only equalled by that occasioned by the invasion of the Gauls two centuries before. The Gauls were terrible enough; but now the conquerors of the Gauls were coming.

Marius, the conqueror of Jugurtha, was looked to by all as the only man who could save the state in this crisis. Accompanied by Sulla as one of his most skilful lieutenants, Marius hastened into Northern Italy. The barbarians had divided into two bands. The Cimbri were to cross the Eastern Alps, and join in the valley of the Po the Teutones, who were to force the defiles of the Western, or Maritime Alps. Marius determined to prevent the union of the barbarians, and to crush each band separately.

Anticipating the march of the Teutones, he hurried over the Alps into Gaul, and falling upon them at a favorable moment (at Aquæ Sextæ, not far from Marseilles, 102 B.C.), almost annihilated the entire host. Two hundred thousand barbarians are said to have been slain. Marius now recrossed the Alps, and, after visiting Rome, hastened to meet the Cimbri, who were entering the northeastern corner of Italy. He was not a day too soon. Already the barbarians had defeated the Roman army under the nobleman Catulus, and were ravaging the rich plains of the Po. The Cimbri, unconscious of the fate of the Teutones, sent an embassy to Marius, to demand that they and their kinsmen should be given lands in Italy. Marius sent back in reply, "The Teutones have got all the land they need on the other side of the Alps." The devoted Cimbri were soon to have all they needed on this side.

A terrible battle almost immediately followed at Vercellæ (101 B.C.). The barbarians were drawn up in an enormous hollow square, the men forming the outer ranks being fastened together with chains, to prevent the lines being broken. This proved their ruin. More than 100,000 were killed and 60,000 taken prisoners to be sold as slaves in the Roman markets. Marius was hailed as the "Saviour of his Country."

"The forlorn-hope of the German migration had performed its duty; the homeless people of the Cimbri and their comrades were no more" (Mommsen). Their kinsmen yet behind the Danube and the Rhine were destined to exact a terrible revenge for their slaughter.

THE SOCIAL, OR MARSIC WAR (91-89 B.C.).—Scarcely was the danger of the barbarian invasion past, before Rome was threatened by another and greater evil arising within her own borders. At this time all the free inhabitants of Italy were embraced in three classes,—Roman citizens, Latins, and Italian allies. The Roman citizens included the inhabitants of the capital and of the various Roman colonies planted in different parts of the peninsula (see p. 246, note), besides the people of a number of towns called municipia; the Latins were the inhabitants of the Latin colonies (see p. 246, note); the Italian allies (socii) included the various subjugated races of Italy.

The Social, or Marsic War (as it is often called on account of the prominent part taken in the insurrection by the warlike Marsians) was a struggle that arose from the demands of the Italian allies for the privileges of Roman citizenship, from which they were wholly excluded. Their demands were stubbornly resisted by both the aristocratic and the popular party at Rome. Some, however, recognized the justice of these claims of the Italians. The tribune Livius Drusus championed their cause, but he was killed by an assassin. The Italians now flew to arms. They determined upon the establishment of a rival state. A town called Corfinium, among the Apennines, was chosen as the capital of the new republic, and its name changed to Italica. Thus, in a single day, almost all Italy south of the Rubicon was lost to Rome. The Etrurians, the Umbrians, the Campanians, the Latins, and some of the Greek cities were the only states that remained faithful.

[Illustration: COIN OF THE ITALIAN CONFEDERACY. (The Sabellian Bull goring the Roman Wolf.)]

The greatness of the danger aroused all the old Roman courage and patriotism. Aristocrats and democrats hushed their quarrels, and fought bravely side by side for the endangered life of the republic. The war lasted three years. Finally Rome prudently extended the right of suffrage to the Latins, Etruscans, and Umbrians, who had so far remained true to her, but now began to show signs of wavering in their loyalty. Shortly afterwards she offered the same to all Italians who should lay down their arms within sixty days. This tardy concession to the just demands of the Italians virtually ended the war. It had been extremely disastrous to the republic. Hundreds of thousands of lives had been lost, many towns had been depopulated, and vast tracts of the country made desolate by those ravages that never fail to characterize civil contentions.

In after-years, under the empire, the rights of Roman citizenship, which the most of the Italians had now so hardly won, were extended to all the free inhabitants of the various provinces, beyond the confines of Italy (see p. 327).