Moctezuma I began the expansion in earnest. First he had to reconquer towns which were first conquered by Itzcoatl, but had since rebelled. He asked a number of smaller cities to contribute to the construction of a new Great Temple, and only Chalco refused, which caused Moctezuma to start a war against them which lasted for several years. He then conquered Huastec territory under a pretext of securing Aztec merchants in that area, and then he went to war against the Mixtecs of Coixtlahuaca. Coixtlahuaca was successfully conquered although the Mixtec ruler Atonal received military assistance from the Nahua states of Tlaxcala and Huexotzinco, by now enemies of the Aztecs. After the defeat of Coixtlahuaca many Mixtec artisans were relocated to the Aztec capital. Later Moctezuma marched upon the Totonacan cities of Vera Cruz and conquered Xalapa, Cosamaloapan, Cotaxtla (modern day Cuetlachtlan), Ahuilizapan (Modern day Orizaba) and north into Huastec territory conquering Tuxpan and Xilotepec.