The Codex Sierra is a colonial

New Spain

New Spain, formally called the Viceroyalty of New Spain , was a viceroyalty of the Spanish colonial empire, comprising primarily territories in what was known then as 'América Septentrional' or North America. Its capital was Mexico City, formerly Tenochtitlan, capital of the Aztec Empire...

 Mesoamerica

Mesoamerica

Mesoamerica is a region and culture area in the Americas, extending approximately from central Mexico to Belize, Guatemala, El Salvador, Honduras, Nicaragua, and Costa Rica, within which a number of pre-Columbian societies flourished before the Spanish colonization of the Americas in the 15th and...

n account book from Santa Catalina Texupa (in the modern Mexican

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

 state of Oaxaca

Oaxaca

Oaxaca , , officially Estado Libre y Soberano de Oaxaca is one of the 31 states which, along with the Federal District, comprise the 32 federative entities of Mexico. It is divided into 571 municipalities; of which 418 are governed by the system of customs and traditions...

), covering the years from 1550 to 1564. It uses both alphabetic

Latin alphabet

The Latin alphabet, also called the Roman alphabet, is the most recognized alphabet used in the world today. It evolved from a western variety of the Greek alphabet called the Cumaean alphabet, which was adopted and modified by the Etruscans who ruled early Rome...

 and pictorial

Mesoamerican writing systems

Mesoamerica, like India, Mesopotamia, China, and Egypt, is one of the few places in the world where writing has developed independently. Mesoamerican scripts deciphered to date are logosyllabic, combining the use of logograms with a syllabary, and they are often called hieroglyphic scripts...

 modes of writing. Though Texupa is a Mixtec and Chocho

Chocho people

The Chochos are an indigenous people of the Mexican state of Oaxaca.-Language:Their traditional language, Chocho, is a member of the Popolocan branch of the Oto-Manguean language family. , it had 770 speakers. Chochos also speak Spanish, the dominant language of Mexico.The Chocho name for...

 community, the text is written in Nahuatl

Nahuatl

Nahuatl is thought to mean "a good, clear sound" This language name has several spellings, among them náhuatl , Naoatl, Nauatl, Nahuatl, Nawatl. In a back formation from the name of the language, the ethnic group of Nahuatl speakers are called Nahua...

, albeit with some Mixtec words. The pictorial portion likewise uses Mixtec conventions

Mixtec writing

Mixtec writing originated as a logographic writing system during the Post-Classic period in Mesoamerican history. Records of genealogy, historic events, and myths are found in the pre-Columbian Mixtec codices. The arrival of Europeans in 1520 AD caused changes in form, style, and the function of...

, such as the "A-O" year sign.