After this the progress of the city in wealth and prosperity, from year to year, was steady and sure, interrupted, it is true, by occasional and temporary reverses, but with no real retrocession at any time. Causes of disagreement arose from time to time with neighboring states, and, in such cases, Romulus always first sent a summons to the party implicated, whether king or people, citing them to appear and answer for their conduct before the Roman Senate. If they refused to come, he sent an armed force against them, as if he were simply enforcing the jurisdiction of a tribunal of justice. The result usually was that the refractory state was compelled to submit, and its territories were added to those of the kingdom of Rome. Thus the boundaries of the new empire were widening and extending every year. Romulus paid great attention, in the mean time, to every thing pertaining to the internal organization of the state, so as to bring every part of the national administration into the best possible condition. The municipal police, the tribunals of justice, the social institutions and laws of the industrial classes, the discipline of the troops, the enlargement and increase of the fortifications of the city, and the supply of arms, and stores, and munitions of war,--and every other subject, in fact, connected with the welfare and prosperity of the city,--occupied his thoughts in every interval of peace and tranquillity. In consequence of the exertions which he made, and the measures which he adopted, order and system prevailed more and more in every department, and the community became every year better organized, and more and more consolidated; so that the capacity of the city to receive accessions to the population increased even faster than accessions were made. In a word, the solid foundations were laid of that vast superstructure, which, in subsequent ages, became the wonder of the world. Notwithstanding, however, all this increasing greatness and prosperity, Romulus was not without rivals and enemies, even among his own people at Rome. The leading senators became, at last, envious and jealous of his power. They said that he himself grew imperious and domineering in spirit, as he grew older, and manifested a pride and haughtiness of demeanor which excited their ill-will. He assumed too much authority, they said, in the management of public affairs, as if he were an absolute and despotic sovereign. He wore a purple robe on public occasions, as a badge of royalty. He organized a body-guard of three hundred young troopers, who rode before him whenever he moved about the city; and in all respects assumed such pomp and parade in his demeanor, and exercised such a degree of arbitrary power in his acts, as made him many enemies. The whole Senate became, at length, greatly disaffected.