OLD MANUSCRIPTS ABOUT THE RISE AND FALL OF AZTEC EMPIRE DISCOVERED IN MEXICO
Scholars who study history use these ancient documents as a means of comprehending and piecing together the various cultures. The codices of San Andrés Tetepilco, three pictographic records of Mexican history from the 16th and 17th centuries—a pivotal time in the country's history—serve as an example of such documents. During this time, the Aztec empire gave way to the Viceroyalty of New Spain. The Mexican government has finally retrieved these invaluable records after many years of effort.
Two hundred codices from Mexico's extensive collection are housed at the National Library of Anthropology and History (BNAH). These pieces' names come from the Latin word codex, which describes manuscript text or imagery that represents and records the artistic output of the major Mesoamerican civilisations—the Aztec, Mayan, Zapotec, and Olmec—which were found in central and southern Mexico as well as portions of Central America.
The mixed content of the San Andrés Tetepilco codices—most Precolumbian documents lack indigenous paintings and texts in Spanish or Nahuatl, but these use the European alphabet—makes them especially significant. Tests conducted on the codices by Mexico's National Institute of Anthropology and History (INAH) to evaluate their condition revealed that they were made on amate (bark) paper, which was then covered with a layer of plaster, cochineal lacquer, and plant-and charcoal-based inks in the colours red, blue, black, and ochre yellow.