C, it made it okay to discriminate against african americans.
Answer: smallpox
Explanation:
Native American Aztec people of Mexico dying of smallpox introduced by the Spaniards, copied from the Codex Florentine. ... By the time Hernán Cortés and his troops began their final assault on Tenochtitlán, bodies lay scattered over the city, allowing the small Spanish force to overwhelm the shocked defenders.
Anasazi
They built their dwellings around mounds in order to make it easier to see the enemy coming from any direction. Such constructions also aimed to slow down an enemy attack by making it hard to attack given that they had to march uphill.
