3. The issue of this war placed the political connections of Rome in a new situation, and necessarily extended her influence abroad. The length of the war and the manner of its conclusion had, moreover, inspired a national hatred, such as is only found in republics; the conviction also that they could not remain independent of one another, must have become much more striking, as the points of contact had greatly increased since the beginning of the war. Who does not know the arrogance of a republic after the first essay of her power has been crowned with success! Rome gave a striking example of this by her invasion of Sardinia in the midst of peace. These successes had also a sensible effect on the Roman constitution. For although in appearance its form was not in the least changed, yet the power of the senate now acquired that preponderance which the ruling authority of a republic never fails to do after long and successful wars. Origin and nature of the governments of the first Roman provinces, in part of Sicily and in Sardinia. 4. An opportunity was soon afforded the Romans, in the Adriatic sea, of making use of their superior naval power, in chastising the pirates of Illyria under their queen Teuta. By effecting this, they not only secured their authority over that sea, but at the same time formed their first political relations with the Grecian states; relations which soon afterwards became of great importance. Commencement of the first Illyrian war, 230, which ended with the subjugation of Teuta, 226. The war, however, again broke out, 222, against Demetrius of Pharus, who conceived himself inadequately rewarded by Rome for the services he had rendered her in the preceding war. The Romans found him a much more dangerous adversary than had been expected, even after his expulsion and flight to Philip, 220, (see above, p. 282.) Throughout this war, Rome appeared as the deliverer of the Grecian states, which had suffered extremely from the plunder of these freebooters; Corcyra, Apollonia, and other cities placed themselves formally under her protection, while the Achaeans, Aetolians, and Athenians vied with each other in showing their gratitude. 5. In the mean time, while Carthage endeavoured to make up for the loss of Sicily and Sardinia by extending her Spanish dominions, which the jealousy of Rome restrained her from carrying beyond the Ebro (p. 84.), Rome herself had a new war to maintain against her northern neighbours the Gauls, which ended after a violent contest with the establishment of her authority over the north of Italy.