Cortez retreated to territory that was controlled by friendly natives. he managed to receive Spanish reinforcements and made new allies. The following year Cortez besieged the Aztec Capital. It was a long and brutal siege and the Spanish had the advantage of some canons. Hunger and disease especially smallpox, eventually reduced the Aztecs and Cortez was able to retake the city that he had lost. This allowed the Spanish to become the heirs of the Aztecs.