Questions: The peoples of the Aztec Empire created a 365-day calendar based on their advanced knowledge of A. astronomy and math B. architecture and math C. medicine and architecture D. astronomy and architecture

The answer is A. astronomy and math

The Aztec calendar was heavily based on their understanding of astronomy and mathematics. They observed celestial bodies and used mathematical calculations to create a calendar system that included a 365-day solar calendar, known as the "xiuhpohualli," which was used for agricultural and civil purposes.

While the Aztecs were skilled in architecture and mathematics, these were not the primary fields used to develop their calendar system. Architecture was more related to their construction of temples and cities.

Medicine and architecture were important aspects of Aztec society, but they were not directly related to the creation of the calendar. Medicine was more about healing practices, and architecture focused on building structures.

Astronomy was indeed a crucial part of the Aztec calendar, but architecture was not directly involved in its creation. The calendar was more about timekeeping and understanding celestial cycles rather than building structures.