Buddhism reached that part of the world we have known for a long time than Thailand is the country that has so many religious. Many people say that Thailand has been Buddhism came in the King Asoka the Great. He was sends Buddhist missionaries to many part of the world. You will see that most are Thailand Buddhism was late we known from evidence. Archaeological finds and other historical evidence it is safe to say that Buddhism first reached Thailand when the country was inhabited by a racial stock of people known as the Mon-khmer who then had their capital Dvaravati or Nakon Pathom in now about 50 kilometer to the west of Bangkok. The great pagoda at Nakon Pahom and other historical and other parts of the country shows that the Buddhism came to Thailand to 4 periods.