1519 Hernan Cortes arrives in Mexico in search of the Aztec civilization and their wealth.
1519 Hernán Cortés enters Tenochtitlán and Aztec ruler Moctezuma welcomes him with a great celebration.
1520 La Noche Triste: a joint Mexican Indian force led by the Aztec ruler Cuitláhuac defeat Spanish Conquistadores led by Hernán Cortés.