Phra Ruang was a significant figure in Thai history, known for being the founder of the Sukhothai Kingdom in the 13th century. He is often celebrated for his role in establishing the first Thai state and promoting the use of the Thai language and culture. His reign marked a period of prosperity and development in the region. Under Phra Ruang's leadership, the kingdom saw advancements in agriculture, trade, and the arts. He is also credited with the creation of the Sukhothai style of sculpture and architecture, which influenced later Thai art. His legacy continues to be honored in Thailand today.