Answer

Tenochtitlan formed a strategic alliance with the neighboring Aztec city-states of Texcoco and Tlacopan in 1428. This alliance was known as the Triple Alliance and was created to provide security for the region and to ensure an equitable system of tribute from the conquered territories. Under this alliance, Tenochtitlan and Texcoco each received 2/5 of the tribute, and Tlacopan received the remaining 1/5 portion. Although Tenochtitlan was the political and military leader of the alliance, each member retained its own legal, economic, and religious systems. Moreover, the Aztecs usually did not impose their laws or customs on the people that they conquered. The Triple Alliance dissolved in 1515 after Tenochtitlan won a power struggle with Texcoco for control of the leadership of the Aztec Empire.