They remained in great barbarism for some time, and sacrificed a daughter of the king of Cholhuacan, whom they had invited into their town, under a specious pretext; on which the king declared war against them, but they were now as powerful as himself. Their government had been hitherto an aristocracy; the nation obeying a council of their great chieftain. At this era they found that a monarchy was best suited to their views, as well because their neighbours had mostly adopted that form of government, as because their territories consisting only of the city, one person was better able to perform the duties of the kingly office than several. They therefore elected Acampatzin for their king and leader, who was descended from the race above mentioned. This prince took a daughter of Acolmiztli, king of Coatlican, for his consort; their rival brothers, the Tlatelolcos also chose a king, the son of the king of the Tepanecans, and in consequence of their choosing the son of this prince, who had hitherto received tribute from both parties, they endeavoured to instigate him to make war on the Mexicans; he however, only doubled their tribute, and otherwise oppressed them very much, for fifty years; during thirty-seven of which, Acamapitzin governed Mexico. He took another wife, and had by her a son Huitzilihiutl, and by his concubines several children, of whom Itzcoatl was afterwards one of the most renowned. Acamapitzin governed Mexico with great success, and in his reign buildings of stone were constructed, and canals for the use and ornament of the place were commenced. He died in the year 1389, and after four months Huitzilihiutl his son, succeeded him by the universal choice of the people. He married a daughter of the king of the Tepanecas, as well as another princess; they each brought him sons, and the son of the latter was the famous Montezuma Ilhuicamina. Huitzilihuitl reigned twenty years, and died in 1409, and was succeeded by his brother Chimalpopoca, who, dying by his own hands in prison, to which he was treacherously conveyed by the king of Acolhuacan, was succeeded by Itzcoatl, the son of Acamapitzin, by a slave. In the mean time they were engaged in many disputes with the neighbouring kings and their rivals the Tlatelolcans, who were as rapidly advancing in power as the Mexicans. The first king of the Tlatelolcans died in 1339.