What european disease badly weakened the aztecs

smallpox

When Cortés returned to Tenochtitlan, he brought the disease with him. Soon, the Aztecs rose up in rebellion against Cortés and his men. Outnumbered, the Spanish were forced to flee. In the fighting, the Spanish soldier carrying smallpox died.

When Cortés returned to Tenochtitlan, he brought the disease with him. Soon, the Aztecs rose up in rebellion against Cortés and his men. Outnumbered, the Spanish were forced to flee. In the fighting, the Spanish soldier carrying smallpox died. so the disease was known as smallpox