Linguistic culture.
Thailand is a country of their own, coming from the past up to the present, because Thailand never country is any country in the world.
Give us a language in use to the present day Thailand and Thailand, too, has in country official language is the language that people in the country, whether they are in sectors where it can communicate with its own language. Because in the country up to 4 main sectors we have Thailand and in each region, it used language different to Thailand so that people can communicate directly, so we are compatible language was born.