Ramkhamhaeng is a historical figure in Thailand, known as the third king of the Sukhothai Kingdom, which flourished in the 13th century. He is credited with establishing the Thai alphabet and promoting Buddhism, which played a significant role in shaping Thai culture and identity. His reign is often associated with the expansion of the kingdom and the development of a centralized government. Ramkhamhaeng is also remembered for the Ramkhamhaeng Inscription, an important stone inscription that provides insights into the social and political life of the time, marking him as a key figure in Thai history.