Uto-Aztecan languages in the context of "O'odham language"

The Bajío (the Lowlands) is a cultural and geographical region within the central Mexican plateau which roughly spans from northwest of Mexico City to the main silver mines in the northern-central part of the country. This includes (from south to north) the states of Querétaro, Guanajuato, parts of Jalisco (Centro, Los Altos de Jalisco), Aguascalientes and parts of Zacatecas, San Luis Potosí and Michoacán.

Located at the border between Mesoamerica and Aridoamerica, El Bajío saw relatively few permanent settlements and big civilizations during Pre-Columbian history, being mostly inhabited by the Otomi and semi-nomadic tribes known to the Aztecs as the "Chichimeca" peoples (poorly attested conglomerate of Uto-Nahua groups, from whom the Toltec and the Aztecs were probably descended). The tribes that inhabited the Bajío proved to be some of the hardest to conquer for the Spanish—peace was ultimately achieved via truce and negotiation—but due to its strategic location in the Silver Route, it also drew prominent attention from Europe, and some of the flagship Mexican colonial cities were built there, such as Zacatecas and Guanajuato. Abundant mineral wealth and favorable farming conditions would soon turn the region into the wealthiest of New Spain. At the beginning of the 19th century, El Bajío was also the place of the ignition of the Mexican War of Independence, and saw most of its battles during the initial phase of the war, including the Cry of Dolores, the storming of the Alhóndiga de Granaditas and the Battle of Calderón Bridge.

Mesoamerica, along with Mesopotamia and China, is one of three known places in the world where writing is thought to have developed independently. Mesoamerican scripts deciphered to date are a combination of logographic and syllabic systems. They are often called hieroglyphs due to the iconic shapes of many of the glyphs, a pattern superficially similar to Egyptian hieroglyphs. Fifteen distinct writing systems have been identified in pre-Columbian Mesoamerica, many from a single inscription. The limits of archaeological dating methods make it difficult to establish which was the earliest and hence the progenitor from which the others developed. The best documented and deciphered Mesoamerican writing system, and the most widely known, is the classic Maya script. Earlier scripts with poorer and varying levels of decipherment include the Olmec hieroglyphs, the Zapotec script, and the Isthmian script, all of which date back to the 1st millennium BC. An extensive Mesoamerican literature has been conserved, partly in indigenous scripts and partly in postconquest transcriptions in the Latin script.

After the Spanish conquest of the Aztec Empire in 1521, Spanish colonial authorities and Catholic Church missionaries aimed to purge indigenous culture, religion and traditional institutions, which included the destruction of texts of Mesoamerican and pre-Columbian origin. However, some Mesoamerican texts were spared, particularly from the Yucatán of southern Mexico, recording the languages of the area. These surviving texts give anthropologists and historians valuable insight into the origins of Mesoamerican languages, culture, religion, and government. Languages recorded in Mesoamerican writing include Classical Maya, Classical Nahuatl, Zapotec, Mixtec, and various other languages, particularly of the Oto-Manguean and Uto-Aztecan families.

The Comanche (/kəˈmæntʃi/), or Nʉmʉnʉʉ (Comanche: Nʉmʉnʉʉ, 'the people'), are a Native American tribe from the Southern Plains of the present-day United States. Comanche people today belong to the federally recognized Comanche Nation, headquartered in Lawton, Oklahoma.

The Comanche language is a Numic language of the Uto-Aztecan family. Originally, it was a Shoshoni dialect, but diverged and became a separate language. The Comanche were once part of the Shoshone people of the Great Basin.

The Nahuan or Aztecan languages are those languages of the Uto-Aztecan language family that have undergone a sound change, known as Whorf's law, that changed an original *t to /tɬ/ before *a. Subsequently, some Nahuan languages have changed this /tɬ/ to /l/ or back to /t/, but it can still be seen that the language went through a /tɬ/ stage. The most spoken Nahuatl variant is Huasteca Nahuatl. As a whole, Nahuatl is spoken by about 1.7 million Nahua peoples.

Some authorities, such as the Mexican government, Ethnologue, and Glottolog, consider the varieties of modern Nahuatl to be distinct languages, because they are often mutually unintelligible, their grammars differ and their speakers have distinct ethnic identities. As of 2008, the Mexican government recognizes thirty varieties that are spoken in Mexico as languages (see the list below).

The Nahuas (/ˈnɑːwɑːz/ NAH-wahz) are a Uto-Nahuan ethnic group and one of the Indigenous people of Mexico, with Nahua minorities also in El Salvador, Guatemala, Honduras, Nicaragua, and Costa Rica. They comprise the largest Indigenous group in Mexico, as well as the largest population out of any North American Indigenous people group who are native speakers of their respective Indigenous language. Amongst the Nahua, this is Nahuatl. When ranked amongst all Indigenous languages across the Americas, Nahuas list third after speakers of Guaraní and Quechua.

The Mexica (Aztecs) are of Nahua ethnicity, as are their historical enemies and allies of the Spaniards: the Tlaxcallans (Tlaxcaltecs). The Toltecs which predated both groups are often thought to have been Nahua as well. However, in the pre-Columbian period Nahuas were subdivided into many groups that did not necessarily share a common identity.

Comanche (English: /kəˈmæntʃi/, endonym Nʉmʉ Tekwapʉ̲) is a Uto-Aztecan language spoken by the Comanche, who split from the Shoshone soon after the Comanche had acquired horses around 1705. The Comanche language and the Shoshoni language are quite similar, but certain consonant changes in Comanche have inhibited mutual intelligibility.

The name Comanche comes from the Ute word kɨmantsi "enemy, stranger". Their own name for the language is nʉmʉ tekwapʉ, which means "language of the people".

Numic is the northernmost branch of the Uto-Aztecan language family. It includes seven languages spoken by Native American peoples traditionally living in the Great Basin, Colorado River basin, Snake River basin, and southern Great Plains. The word "Numic" comes from the cognate word in all Numic languages for "person", which reconstructs to Proto-Numic as /*nɨmɨ/. For example, in the three Central Numic languages and the two Western Numic languages, the word for "person" is /nɨmɨ/. In Kawaiisu it is /nɨwɨ/, and in Colorado River, it is /nɨwɨ/, /nɨŋwɨ/, and /nuu/.

The Shoshone or Shoshoni (/ʃoʊˈʃoʊni/ shoh-SHOH-nee or /ʃəˈʃoʊni/ shə-SHOH-nee), also known by the endonym Newe, are an Indigenous people of the United States with four large cultural/linguistic divisions:

• Eastern Shoshone: Wyoming
• Northern Shoshone: Southern Idaho
• Western Shoshone: California, Nevada, and Northern Utah
• Goshute: western Utah, eastern Nevada

They traditionally speak the Shoshoni language, part of the Numic languages branch of the large Uto-Aztecan language family. The Shoshone were sometimes called the Snake Indians by neighboring tribes and early American explorers.

Whorf's law is a sound law in Uto-Aztecan linguistics proposed by the linguist Benjamin Lee Whorf. It explains the origin in the Nahuan languages of the phoneme /tɬ/, which is not found in any of the other languages of the Uto-Aztecan family. The existence of /tɬ/ in Nahuatl had puzzled previous linguists, and caused Edward Sapir to reconstruct a /tɬ/ phoneme for Proto-Uto-Aztecan – based only on evidence from Aztecan. In a 1937 paper published in the journal American Anthropologist, Whorf argued that the phoneme was a result of some of the Nahuan or Aztecan languages having undergone a sound change changing the original */t/ to [tɬ] in the position before */a/. The sound law was labeled "Whorf's law" by Manaster Ramer and is still widely – though not universally – considered valid, although a more detailed understanding of the precise conditions under which it took place has been developed.

The situation had been obscured by the fact that often the */a/ had then subsequently been lost or changed to another vowel, making it difficult to realize what had conditioned the change. Because some Nahuan languages have /t/ and others have /tɬ/, Whorf thought that the law had been limited to certain dialects and that the dialects that had /t/ were more conservative. In 1978, Lyle Campbell and Ronald Langacker showed that, in fact, Whorf's law had affected all of the Nahuan languages and that some dialects had subsequently changed /tɬ/ to /l/ or back to /t/, but it remains evident that the language went through a /tɬ/ stage.