Answer:
Moctezuma II welcomed the Spanish, thinking that Cortés was the human incarnation of the god Quetzalcoatl.
Cortes and his men brought smallpox to Tenochtitlan, killing many Aztec.
Step-by-step explanation:
The Aztecs thought of Cortes as a god when he appeared in the Aztec capital. Hernan Cortes was seen as the incarnation of the god. He was a Spanish conquistador whose purpose was to conquer the Empires in the New World. Montezuma was taken hostage by Cortes. After Montezuma death, the Aztec people countered and fought with the Spanish. Many of the Aztec died after they came into contact with Europeans. The reason for the deaths was diseases like smallpox, scarlet fever, etc, which they were not immune to it.