Question

Which statement about ancient American civilizations expresses a historical theory rather than a historical fact?

A. The Incas lacked a written language.
B. The spread of disease caused the downfall of the Mayan empire.
C. Human sacrifice was an element of the Aztec religion.

Answer 1

The spread of disease caused the downfall of the Mayan empire (B.) is not a historical fact, but is rather a theory developed by historians as research has been conducted of ancient American civilizations.