Thailand, formerly known as Siam, and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the center of the Indochinese Peninsula.  Thailand is bordered to the north by Myanmar and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the west by the Andaman Sea and the southern extremity of Myanmar. Population is over 66 million people. Tai peoples migrated from southwestern China to mainland Southeast Asia from the 11th century. 

Thailand has had 20 constitutions and charters since 1932, including the latest and current 2017 Constitution. The politics of Thailand is conducted within the framework of a constitutional monarchy, whereby a hereditary monarch serves as head of state. Thailand’s most prevalent religion is Theravada Buddhism, which is an integral part of Thai identity and culture. Thailand has the second-largest number of Buddhists in the world after China.

Source: Thailand – Wikipedia