An attempt on the part of Tarquinius Superbus, the successor of Servius Tullius, to undo the reforms of his predecessor, and to establish what the ancients called a tyranny, or a government of individual will, led to the expulsion of him and his family, and to the abolition of the kingly form of government at Rome, B. C. 509, or in the year of the city 245. Instead of a king, two annual magistrates called Consuls were appointed, in whom were vested all the kingly functions, with the exception of the pontifical, for which special functionaries were created. Otherwise, the Servian constitution remained in full operation. THE COMMONWEALTH TO THE GAULISH INVASION――STRUGGLE BETWEEN THE PATRICIANS AND PLEBEIANS. After the expulsion of the kings, the little republic had to struggle through many difficulties arising from the attacks of the neighboring nations, incited thereto by the Tarquinii. Ten of the twenty-six rural parishes were torn away in the contest――a loss equivalent to a full third part of the Roman territory. It would have required a prophetic eye to foresee that, of all the states into which Italy was then divided, this little struggling republic was to obtain the preëminence. One would have been disposed to promise the supremacy of the peninsula rather to the cultured and large-brained Etruscans, already masters of the north of Italy; to the hardy and valiant Samnites, who were fast overspreading the southern interior; or, most probably of all, to the Greeks, who, after adding Sicily to the empire of their gifted race, were rapidly establishing colonies on the southern coasts of the peninsula. Nay, clustered round the Roman territories there were various petty states, any one of which might have appeared a match for Rome――the Latins, the Æquians, the Volcians, the Hernicans, the Sabines, and the Etruscans of Veii on the right bank of the Tiber. Who could have predicted that, bursting this cincture of nations, the men of the Tiber would overspread the peninsula, and, by the leavening influence of their character and institutions, throw first it and then all Europe, into fermentation?