500
Three main reasons why Cortes was able to conquer the Aztecs.
What are: 1) Huge army of native allies: Native Mexican leaders wanted to use the Spanish to help them destroy the Aztecs.? 2) Smallpox: Native Mexicans had no immunity or defense against this European disease. Killed a third of Tenochtitlan, including many military leaders. ?3) Resources / technology: Horses, guns, and steel.