the vast majority of Mexicans, though it is not defined as an official language in legislation. The second article of the 1917 Constitution defines the country as multicultural, recognizes the right of the indigenous peoples to "preserve and enrich their languages" and promotes "bilingual and intercultural education". In 2003, the Mexican Congress approved the General Law of Linguistic Rights of the Indigenous Peoples, which is a law that recognizes that Mexico's history makes its indigenous languages "national languages". Accordingly, they "have the same validity [as Spanish] in their territory, location and context". At the same time, legislators made no specific provisions for the official or legal status of the Spanish language. This law means that indigenous peoples can use their native language in communicating with government officials and request official documents in that language. The Mexican state supports the preservation and promotion of the use of the national languages through the activities of the National Institute of Indigenous Languages. Mexico has about six million citizens who speak indigenous languages. That is the second-largest group in the Americas after Peru. However, a relatively small percentage of Mexico's population speaks an indigenous language compared to other countries in the Americas, such as Guatemala (42.8%), Peru (35%), and even Ecuador (9.4%), Panama (8.3%), Paraguay and Bolivia. The only indigenous language spoken by more than a million people in Mexico is the Nahuatl language; the other Native American languages with a large population of native speakers (at least 400,000 speakers) include Yucatec Maya, Tzeltal Maya, Tzotzil Maya, Mixtec, and Zapotec. Language endangerment According to the Law of Linguistic Rights, Mexico recognizes sixty-two indigenous languages as co-official National languages. With Spanish being the dominant language, Mexico has become a site for endangered languages. "Indigenous people’s disadvantaged socioeconomic status and the pressure of assimilation into mestizo society have been influential on indigenous language loss." The result of the conflict between indigenous languages and Spanish has been a language shift in Mexico from indigenous languages being spoken to more people using Spanish in every domain. Due to this situation there have been many language revitalization strategies implemented in order to create a language shift to try to reverse this language shift. Literature projects done with the Nahua people include "Keeping the fire alive: a decade of language revitalization in Mexico" showing the experiences of language revitalization in South Mexico. Classification The following is a classification of the