What was the primary reason for the downfall of the Aztec empire

Answer 1

The primary reason for the downfall of the Aztec empire was the Spanish conquest led by Hernán Cortés in the early 16th century. Cortés, along with his small army of Spanish conquistadors, allied with various indigenous groups who were enemies of the Aztecs, such as the Tlaxcalans and the Totonacs. This alliance allowed Cortés to gather a larger force and launch a successful siege of Tenochtitlán, the capital city of the Aztec empire, in 1521. The Aztecs, weakened by internal conflicts and diseases brought by the Spanish, were eventually defeated, resulting in the end of their empire.