I want to know the answer to the following question:
What grants all indigenous languages spoken in Mexico validity?
All the background I'm provided with is that "The "General Law of Linguistic Rights of the Indigenous Peoples" grants all indigenous languages spoken in Mexico, regardless of the number of speakers, the same validity as Spanish in all territories in which they are spoken, and indigenous peoples are entitled to request some public services and documents in their native languages.". Is that enough to answer the question?
Answer: yes