Final answer:
The Codex Boturini is a historical narrative that details the migration of the Mexica people and includes elements of Aztec culture, religion, and society like other codices, particularly the sacred and solar calendars.
Step-by-step explanation:
The Codex Boturini is considered a historical narrative. This ancient manuscript, attributed to the Aztecs, was likely written before or during the Spanish invasion. The Codex Boturini details the migration of the Mexica people and is known for its historical significance in portraying events related to the Aztecs. Unlike fictional, biographical or mythological narratives, it is meant to document real historical events, similar to the other pre-Columbian codices such as the Codex Borbonicus and the Codex Mendoza. Historians and researchers examine codices like these for insight into Aztec culture, religious practices, and societal structures.
Two important aspects of the Codex Borbonicus are its relation to the 260-day Sacred Year and the 365-day Solar Year, underlining its connection to astrological and calendrical systems, which were integral parts of the cultural knowledge encoded in Aztec manuscripts. The Florentine Codex, on the other hand, provides valuable information on Aztec deities and cultural practices, while the Codex Mendoza documents the history and everyday life of the Aztecs before the Spanish conquest.