 It was not a foregone idea that the site of Tenochtitlan would become the Spanish capital, but Cortés made it the capital.Cortés imprisoned the royal families of the valley.To prevent another revolt, he personally tortured and killed Cuauhtémoc, the last Aztec Emperor; Coanacoch, the King of Texcoco, and Tetlepanquetzal, King of Tlacopan.