Siam (officially, Kingdom of Siam) is the name used to refer to a foreign country in the past and usually include Thailand, Siam the people of Thailand in the region. But it's not the name this group calls themselves. The Government Institute states that Siam is the name of a land and a group of people who have inhabited this region since ancient times. Siam has been the official name of Thailand since the administration. Developer_Thailand onwards. Before changing to "Thai" on June 24, 1939, the Thai president used the name "Siam" for centuries to make treaties with foreigners. Since the kingdom consisted of many ethnic groups such as Thai, Lao, Mon, Vietnamese, Khmer, Chinese, Western and Malay, the Thai monarch called this land Siam for the unity of the people. Moreover, the name Siam remained. It is widely known in the academic circles of foreign countries as well.
In 1939 there was an attempt to change the name of Thailand. Return to Siam but will see that the former Thai people do not call themselves Siam . Instead, they are Mon-Khmer people. who call people who use the Tai-Lao language family Now, the Bru people (Mon-Khmer) in Mukdahan area Calling the Phu Tai people "Siam", including in the Luobu-Burma region, the Tai people are often hit by Lawa people. Called siam and by the manner of calling other peoples names As the Luobu call the Tai as Bai Yue or Laos, they call the Mon-Khmer speaking people in Laos "Kha", etc.