Respuesta :
Smallpox took its toll on the Aztecs in several ways. First, it killed many of its victims outright, particularly infants and young children.
Answer:
The spanish flu.
The Spanish flu, also known as the 1918 flu pandemic, was an unusually deadly influenza pandemic caused by the H1N1 influenza A virus. Lasting from February 1918 to April 1920, it infected 500 million people – about a third of the world's population at the time – in four successive waves.