There are more than 130 recognised ethnic groups and as many languages spoken including Shan, Karen, Kachin, Chin, Mon and Rakhine which are the most common and recognised by the authorities. For the theoretical side, a little bit boring I know, but I have to address it as a linguist, the Burmese language is spoken by 32 million people, almost 70% of the population speak it as their mother tongue and nearly 10 million speak it as a second language.
