April 1939: A passage of law to enable people to
change their nationality to Thai, provided that they
disclaimed any loyalty to the former nation (aiming
at China), and proved their loyalty to Siam, by
speaking Thai, changing their former names to Thai
names, educating their children at Thai schools (of
104 qualified applicants were wealthy merchants ,
mine owners, and industrialists who contributed
greatly to the development of new state enterprises