In the spring of 1519, the Spanish adventurer Hernan Cortes landed on the deserted Mexican coast in the Veracruz region. He had only one goal - to conquer Mexico, which was then at the mercy of the warlike Aztecs. Cortés had only four hundred soldiers, while the Aztec army numbered tens of thousands of brave and battle-hardened warriors. But after a few months, the Aztec capital Tenogtitlan was given without a fight to overseas aliens, and the omnipotent Aztec "emperor" Montezuma turned into a submissive puppet of the Spaniards. What is that? The hand of fate, a miracle, or the superiority of medieval Europe over medieval America?