Sukhothai period began to emerge as a dominant force in the region in the 13th century, gradually asserting independence from existing Khmer and Mon kingdoms. Founded by Khun Pha Muang and Khun Bang Klang Thao in 1238, the Kingdom was named by its rulers "the dawn of happiness". The Sukhothai Period is often considered the golden era of Thai history, the most famous of whom was King Ramkamhaeng.In addition to developing some of the most beautiful Thai art, the Sukhothai Kingdom is credited with developing the modern Thai alphabet. However, following the death of King Ramkamhaeng,