Tlacopan

Tlacopan was a Nahuatl people and a member of the Aztec confederacy in the Valley of Mexico. It was one of the three city-states that formed a triple alliance with Tenochtitlan and Texcoco, playing a significant role in the region's history. This alliance was crucial in challenging the Tepanec rulers and later in the expansion of the Aztec empire. While Tenochtitlan became the dominant capital, Tlacopan, along with Texcoco, contributed to the cultural and political landscape of pre-Columbian Mexico. The city's influence waned as the Aztec empire grew, but its historical significance remains as part of this powerful confederacy.123