Mesoamerican languages are the languages indigenous to the Mesoamerican cultural area, which covers southern Mexico, all of Guatemala and Belize and parts of Honduras and El Salvador and Nicaragua. The area is characterized by extensive linguistic diversity containing several hundred different languages and seven major language families. Mesoamerica is also an area of high linguistic diffusion in that long-term interaction among speakers of different languages through several millennia has resulted in the convergence of certain linguistic traits across disparate language families. The Mesoamerican sprachbund is commonly referred to as the Mesoamerican Linguistic Area. The languages of Mesoamerica were also among the first to evolve independent traditions of writing. The oldest texts date to approximately 1000 BCE (namely olmec and zapotec), though most texts in the indigenous scripts (such as Maya) date to c. 600–900 CE. Following the arrival of the Spanish in the 16th century, and continuing up until the 19th century, most Mesoamerican languages were written in Latin script. The languages of Mesoamerica belong to 6 major families – Mayan, Oto-Mangue, Mixe–Zoque, Totonacan, Uto-Aztecan and Chibchan languages (only on the southern border of the area) – as well as a few smaller families and isolates – Purépecha, Huave, Tequistlatec and Misumalpan. Among these Oto-Manguean and Mayan families account for the largest numbers of speakers by far – each having speakers numbering more than a million. Many Mesoamerican languages today are either endangered or already extinct, but others, including the Mayan languages, Nahuatl, Mixtec and Zapotec, have several hundred thousand speakers and remain viable. Language vs. dialect The distinction between related languages and dialects is notoriously vague in Mesoamerica. The dominant Mesoamerican socio-cultural pattern through millennia has been centered around the town or city as the highest level community rather than the nation, realm or people. This has meant that within Mesoamerica each city-state or town community, called in Nahuatl an , has had its own language standard which, in the typical case, has evolved separately from closely related but geographically remote languages. Even geographically close communities with closely related, mutually intelligible languages have not necessarily seen themselves as being ethnically related, or their language as being a unifying factor between them. The relative endogamy of the town community has also resulted in a large linguistic diversification between communities despite geographical and linguistic proximity, often resulting in a low intelligibility between varieties of the same language spoken in adjacent communities.