The Sukhothai kingdom was an early kingdom in the area around the city Sukhothai, in north central Thailand. The Kingdom existed from 1238 till 1438. The old capital, now 12 km outside of New Sukhothai in Tambon Mueang Kao, is in ruins and has been designated as a UNESCO World Heritage historical park.

History

Liberation from Lavo

Prior to the 13th century, Tai kingdoms had existed on the northern highlands including the Ngoen Yang (centered on Chiang Saen; predecessor of Lanna) kingdom and the Heokam (centered on Chiang Hung, modern Jinghong in China) kingdom of Tai Lue people. Sukhothai had been a trade center and part of Lavo, which was under the domination of the Khmer Empire. The migration of Tai people into upper Chao Phraya valley was somewhat gradual.

Modern historians stated that the secession of Sukhothai from the Khmer empire began as early as 1180 during the reign of Po Khun Sri Naw Namthom who was the ruler of Sukhothai and the peripheral city of Sri Satchanalai (now a part of Sukhothai Province as Amphoe). Sukhothai had enjoyed a substantial autonomy until it was re-conquered around 1180 by the Mons of Lavo under Khomsabad Khlonlampong.

Two brothers, Po Khun Bangklanghao and Po Khun Phameung (Po Khun was a Siamese title of high nobility) took Sukhothai from Mon hands in 1239. Bangklanghao ruled Sukhothai as Sri Inthraditaya – and began the Phra Ruang dynasty - he expanded his primordial kingdom to the bordering cities. At the end of his reign in 1257, the Sukhothai kingdom covered the entire Upper Chao Phraya valley.

Traditional Thai historians considered the foundation of the Sukhothai kingdom as the beginning of their nation because little was known about the kingdoms prior to Sukhothai. Modern historical studies demonstrate that Thai history began before Sukhothai. Yet the foundation of Sukhothai is still a celebrated event.

Expansions under Ramkamhaeng

Po Khun Banmeaung and his brother Ramkhamhaeng expanded the Sukhothai kingdom at the expense of neighboring civilizations. For the first time a Tai state became a dominant power in Southeast Asia. To the south, Ramkamhaeng subjugated the kingdom of Supannabhum and Sri Thamnakorn (Tambralinga) and, through Tambralinga, adopted Theravada as state religion. Traditional history described the extension of Sukhothai in a great fashion and the accuracy of these claims is disputed. To the north Ramkamhaeng put Phrae, and Mueng Sua (Luang Prabang) under tribute.

To the west Ramkamhaeng helped the Mons under Wareru (who is said to have eloped with Ramkamhaeng’s daughter) to free themselves from Pagan control and established a kingdom at Martaban (they later moved to Pegu). So, Thai historians considered the Kingdom of Martaban a Sukhothai tributary. However, in practice, such Sukhothai domination may not have extended that far.

On culture, Ramkamhaeng requested the monks from Sri Thamnakorn to propagate the Theravada religion in Sukhothai. In 1283, the Thai script was invented by Ramkamhaeng, formulating into controversial Ramkamhaeng Stele discovered by Mongkut 600 years later. From the Stele is almost what we know about Sukhothai.

Ramkamhaeng’s government characterized the governance of Sukhothai kingdom – the patrocracy – in which the king is considered “father” and people “children”. He also encouraged the free trade, stating those who wish to trade elephants, trade them then. Those who wish to trade horses, trade them then.
It was also his time that the first relation with Yuan dynasty was formulated and Sukhothai began sending trade missions to China. The well-known exported good of Sukhothai was the Sangkalok (i.e. Song dynasty pottery) – the only period that Siam produced Chinese-styled ceramics and fell out of use by the 14th century.

Decline and Domination of Ayutthaya

The Sukhothai domination was, however, short. After the death of Ramkamhaeng, the Sukhothai tributaries broke away. Ramkamhaeng was succeeded by his son Loethai. The vassal kingdoms, first Uttaradit in the north, then soon after the Laotian kingdoms of Luang Prabang and Vientiane (Wiangchan), liberated themselves from their overlord. In 1319 the Mon state to the west broke away, and in 1321 Lanna placed Tak, one of the oldest towns under the control of Sukhothai, under its control. To the south the powerful city of Suphanburi also broke free early in the reign of Loethai. Thus the kingdom was quickly reduced to its former local importance only. Meanwhile, Ayutthaya rose in strength, and finally in 1378 King Thammaracha II had to submit to this new power.
In 1378, the armies from Ayutthaya kingdom invaded and put Sukhothai under her tributary. Suffering the urban decline, Luethai moved the capital to Pitsanulok.

In 1424, after the death of Sailuethai, Paya Ram and Paya Banmeung the two brothers fought for the throne. Nagarindrathirat of Ayutthaya intervened and further divided the kingdom between the two. Their sister had married to Borommaracha II of Ayutthaya and produced a son, Prince Ramesuan. When Borompan died in 1446 without any heirs, the throne passed to Ramesuan or Trailokanat. Ramesuan was also crowned as the King of Ayutthaya in 1448, thus began the personal union between the Kingdom of Sukhothai and Ayutthaya.

The Silajaruek Sukhotai are hundreds of stone inscriptions that form a historical record of the period. Among the most important inscriptions are Silajaruek Pho Khun Ramkamhaeng (Stone Inscription of King Ramkamhaeng), Silajaruek Wat Srichum (an account on history of the region itself and of Srilanka), and Silajaruek Wat Pamamuang (a Politico-Religious record of King Loethai).

The Kings of Sukhothai

• King Pho Khun Sri Indraditya (1249- 1257)

• King Pho Khun Ban Muang (1257 - 1277)

• King Pho Khun Ramkhamhaeng (Ramkhamhaeng the Great) (ruled 1277 - 1298 or 1317) (called Rammaraj in the Ayutthaya chronicles)

• King Pu Phraya Si Songklam: After Ramkhamheang's death, ruled temporarily in absence of Loethai who was on trip to China. He was not styled Pho Khun. (Not counted as a King)

• King Pho Khun Loethai (1298 - 1347)

• King Pho Khun Nguanamthom (1347)

• King Phya Lithai or Thammaracha I (1347 - 1368/1374)

• King Thammaracha II or Phya Leuthai (1368/1374 - 1399)

• King Thammaracha III or Phya Saileuthai (1399 - 1419)

• King Thammaracha IV (1419 - 1438)

Category:States and territories established in 1238Category:History of ThailandCategory:Indianized kingdomsCategory:1438 disestablishmentsCategory:Tai history
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