EARLY YEARS:
Prior to 1180 AD Sri Naw Namthom gained much autonomy from the Khmer Empire,
but in that year Khomsabad Khlonlampong seized Sukhothai for the Mon.
Two brothers, Bangklanghao and Phameung, broke free of the Mon in 1239 AD and Bangklanghao founded the
Phra Ruang Dynasty as Sri Indraditya. He conquered the upper
Chao Phraya River before his death in
1257 AD.
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KING RAMKHAMHAENG: Ramkhamhaeng and his brother, Ban Muang, continued to
expand Sukhothai's territory. As king, Ramkhamhaeng subjugated the kingdoms of Muang Sua
(Luang Prabang), Phrae
on the Yom River, Sri Thamnakorn
(Tambralinga) and Supannabhum. He also helped
a Mon king named Wareru to be free of Pagan
and found a kingdom at Martaban (modern Mottama) in Burma.
Ramkhamhaeng invited Buddhist monks to spread
Theravada Buddhism throughout Sukhothai. He also was credited with designing the current
Thai alphabet in 1283 AD.
During his reign, a delegation and trade missions visited the Yuan Dynasty
of China. Thai artisans made Sangkalok pottery (similar to that of the Chinese
Song Dynasty). Sukhothai later was
acknowledged as a refuge for escaped slaves from other regional kingdoms.
DECLINE:
After Ramkhamhaeng's death, various provinces and city-states declared independence from King Loethai,
including Suphan Buri and Tak.
In 1378 AD the kingdom of Ayutthaya conquered
Sukhothai. King Luethai moved Sukhothai's capital to Phitsanulok.
King Ramesuan of Ayutthaya (aka Trailokanat) formally united both kingdoms in 1448 AD.