It was not just one European, it was the Spanish Conquistadors lead by Cortes.
Hernan Cortez destroyed the Aztec civilization. As for the Incas, i dont not know!
CortésHernan Cortez and the Spanish conquistadors.
The Spanish
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.
Hernán Cortés
The Olmec had died out long before European settlement.