La Noche Triste (Night of Sorrow): The forces of 
Cuitláhuac, 
Aztec ruler of Tenochtitlan, gain a major victory against the forces of conquistador 
Hernán Cortés. This results in the death of about 400 conquistadors and some 2,000 of their 
Native American allies. However, Cortés and the most skilled of his men manage to escape and later regroup.