His thirtieth year was spent as a quæstor in Spain. While traveling to and from this province he was forcibly impressed by the industrial and economic conditions in Etruria. Throughout this rich and extensive territory the small freeholder seemed to have entirely disappeared, and the land was now occupied by large estates cultivated by slaves. Tiberius returned to Rome just as the so-called "slave war" in Sicily broke out. This war not only called attention to the vast number and the depths of wretchedness of the slaves already in Italy and the adjoining island, but it also served to emphasize the perilous condition of a state whose foundation rested upon such a smoldering volcano.

In this servile war the slaves throughout large portions of the island of Sicily arose in a body, murdered those of their masters who were not fortunate enough to escape, and selected a Syrian juggler as their king. A Greek slave, named Achæus, proved not only a skillful commander in the field but also a capable organizer, and he soon mustered a large army containing both slaves and free laborers. Another leader, Cleon, a Sicilian slave, captured the important city of Agrigentum. The united forces defeated the Roman prætor Lucius Hypsæus, and temporarily drove the Romans out of Sicily.

It was not until after three years of continued warfare, after the Romans had suffered numerous defeats and great armies had been sent under three different Roman consuls, that the rebellion in Sicily was finally put down.

Upon his return from Spain, and at the breaking out of the servile war, Tiberius Gracchus had not hesitated to freely express his feelings as to the cause of the existing evils, and as to the necessary remedies for their amelioration, and it was not long before that part of the Roman people who were dissatisfied with existing conditions turned to Gracchus as the only logical leader for the reform movement. As his views on the cause of the evils and the general character of the remedies which he proposed had been shown to the people by his speeches, Tiberius was elected tribune in 134 B.C., taking office on December 10 of that year.

The reforms proposed by Tiberius Gracchus in the bill presented before the comitia tributa, almost immediately after his installation as tribune, were entirely of an economic character. In the field of mere political rights nothing more remained to be asked by the lowest of the Roman citizens; their pitiable condition was the result of the existing agrarian situation. The agrarian bill proposed by Tiberius Gracchus, while a radical departure from existing conditions, was neither illegal, confiscatory, nor unjust; it merely provided for a reassumption on the part of the state of land long held illegally by the "special interests" of the place and age.

The agrarian law of Tiberius Gracchus was in its main features merely a revival of the Licinian agrarian law of 367 B.C. By the original law (which for more than two centuries had been so flagrantly violated) it had been provided that no head of a family should hold more than five hundred jugera (a jugera being a little more than three fifths of an acre) of the public land. Tiberius proposed to reënact this law, but with the concession added that adult sons might hold each an additional two hundred and fifty jugera; but not more than one thousand jugera, in all, were to be held by any single family. Whoever was unlawfully in possession of the public land was required to return the same, above the permitted maximum, to the state; fair compensation, however, was to be allowed for improvements made by the holder of the land while it was in his possession.

The law further provided that all public lands were to be placed under the control of three commissioners. This commission was to allot the public land, in small parcels, to such poor citizens as might apply for it. These new occupiers of the land were to hold it in perpetuity as tenants of the state, paying a small annual rental. These estates were to descend to the children of the holders, but were not to be alienated, thus preventing the possibility of the land being once again gathered together into large estates.

No valid objection could be made to the proposals of Tiberius Gracchus, which were merely the righting of one of the worst of the existing scandals of the Roman administration; a reform, moreover, which was to be carried out in such a manner as to give to the wrongdoers far greater consideration than that to which they were entitled. The law, however, dealt a heavy blow against the richest and most powerful class in Rome. The greater Roman capitalists had so long held possession, in utter defiance of the law, of the great bulk of the public lands of the state that their wrongful possessions had, in their eyes, ripened into a rightfully vested interest.

An indirect method of attack has always been used by the opponents of Gracchus, both by the opponents of his own day and by those historians who have attempted to assail his memory. A recent historian, unfriendly both to Gracchus and to his democratic reforms (Ferrero), refers to this bill as follows:

"The bill was very favorably received by the peasants and the small proprietors. It appears also to have given great satisfaction to the clients, freemen, and artisans, who made up the proletariat of the metropolis; they fell into the not unnatural mistake—often made by the poor before and since—of regarding the greed of the rich, and the indifference of the government, as a sufficient explanation of their own distress."