<P> He went on to conquer the Matlatzinca and Mazahua cities of Tollocan, Ocuillan, and Malinalco west of the Valley of Mexico . </P> <P> At this point Tenochtitlan experienced a brief "civil war" when the small city of Tlatelolco, considered a part of Tenochtitlan by the Aztecs, rebelled under their Tlatoani Moquihuix, who sought to ally himself with the longstanding enemies of the Tenochca, the Chalca, Tlaxcalteca, Chololteca and Huexotzinca . The Tlatelolca were defeated and Axayacatl then ordered the execution of all the rulers who had aided him, including the ruler of Xochimilco . </P> <P> Continuing campaigns in the west in 1479, he suffered an unprecedented defeat by the Purépechas at Tzintzuntzan . This was the Aztecs' first great defeat; once recovered he had to consolidate control of the Huasteca region which had already been conquered by his predecessor . </P> <P> In 1481 Axayacatl's brother Tizoc ruled briefly, but his rule was marred by the humiliation he received in his coronation war: fighting the Otomies at Metztitlan he brought home only 40 prisoners for sacrifice at his coronation ceremony . After this defeat Tizoc had to fight principally to maintain control of the already conquered territories, and failing to subdue new towns he was replaced, possibly poisoned, by his younger brother Ahuitzotl . </P>

What time did the aztecs start and end