In the country there are Thai native language of each of the different sectors. Divided into the local language is a big group all 4 language, but the language that is used as an intermediary language to Thai people's communication across the country is that the language of the Central Thai.
In Thailand, the local language of each region vary widely. Which were localized to large groups at all four languages, but English is the medium used to communicate the language of the country of Thailand Central Thailand.
In the local language of each region varies. The dialect group all 4 language. But the language use is the language medium for communication of nationwide is the language of the ภาคกลางของไทย.