Hernan Cortez destroyed the Aztec civilization. As for the Incas, i dont not know!
the Aztec civilization was destroyed by a spanish conquest lead by hernan Cortes
Spain.
The Aztec
the aztec
Spanish invaders, allied with the Aztec arch-enemies: the Tlaxcalans.
Hernan Cortez and the Spanish conquistadors.
The Aztecs.
Leave? Spaniards didn't leave Aztecs alone; they conquered them and utterly destroyed their civilization.
The Aztec civilization, led by Emperor Moctezuma, was conquered and destroyed by Hernan Cortes and his Spanish forces in the early 16th century. Cortes arrived in Mexico in 1519 and, with the help of indigenous allies who resented Aztec rule, he was able to defeat the Aztec Empire in 1521.
It was not just one European, it was the Spanish Conquistadors lead by Cortes.
Before the Spanish, who eventually destroyed the Aztecs, the Mesoamerican civilization with the greatest impact upon them where the Teotihuacans.