Sukhothai had been a trade centre and part of Lavo present day Lopburiwhich was under the domination of the Khmer Empire.
Sukhothai had been a trade centre and part of Lavo present day Lopburiwhich was under the domination of the Khmer Empire. The migration of Tai people into the upper Chao Phraya valley was somewhat gradual. Modern historians stated that the secession of Sukhothai also spelled Sukhodaya  from the Khmer empire began as early as during the reign of Pho Khun Sri Naw Namthom who was the ruler of Sukhothai and the peripheral city of Si Satchanalai now a part of Sukhothai Province as Amphoe.
Sukhothai had enjoyed a substantial autonomy until it was reconquered around by the Mon people of Lavo under Khomsabad Khlonlampong. Bangklanghao ruled Sukhothai as Sri Indraditya — and began the Phra Ruang Dynasty —he expanded his primordial kingdom to the bordering cities.
At the end of his reign inthe Sukhothai kingdom covered the entire upper valley of the Chao Phraya River then known simply as Menam, "Mother of Waters," the generic Thai name for rivers.
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. 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 west, Ramkhamhaeng 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. With regard to culture, Ramkhamhaeng requested the monks from Sri Thamnakorn to propagate the Theravada religion in Sukhothai.
Inthe Thai script was invented by Ramkamhaeng, formulating into the controversial Ramkamhaeng Stele discovered by Mongkut years later.
It was also this 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 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[ edit ] By the beginning of the fourteenth century, the Thai of Sukhothai controlled most of present-day Thailand. Only the eastern provinces remained under Khmer control.
Ramkhamhaeng 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 Wiangchanliberated themselves from their overlord. In the Mon state to the west broke away, and in Lanna placed Takone 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. Inthe armies from Ayutthaya Kingdom invaded and put Sukhothai under her tributary.
Intharacha of Ayutthaya intervened and further divided the kingdom between the two. When Mahathammaracha IV died inking Borommaracha II of Ayutthaya installed his son Ramesuan the future king Borommatrailokanat of Ayutthaya as viceroy of Sukhothai, presumably accompanied by Ayutthayan administrative staff and a military garrison, thus marking the end of Sukhothai as an independent kingdom.
Gradual merger with Ayutthaya[ edit ] It was however not simply annexed and incorporated into the Ayutthayan Empire, rather did the two mandalas and their traditions gradually merge during the 15th and 16th centuries.
Sukhothai's warfare, administration, architecture, religious practice and language influenced the Ayutthayan ones significantly. As the Ayutthaya Kingdom did not yet have a centralised administration, the former territories of Sukhothai, now termed as the "northern cities" or Mueang Nuea, continued to be ruled by local aristocrats under Ayutthaya's overlordship.
In modern terms, this state may be described as a sort of "federation". The most important "northern city" was now Phitsanulok, as Sukhothai proper had massively lost importance.Ramkhamhaeng Museum is dedicated to King Pho Khun Ramkhamhaeng, the third king of the Phra Ruang dynasty during the Sukhothai Kingdom Ramkhamhaeng Museum exhibits artifacts and antiques found during a series of excavations in Sukhothai Historical Park and .
Ram Khamhaeng – King Ram Khamhaeng was the third king of the Phra Ruang dynasty, ruling the Sukhothai Kingdom from –, during its most prosperous era. He is credited with the creation of the Thai alphabet and the establishment of Theravada Buddhism as the state religion of the kingdom.
He was the third king of the Phra Ruang dynasty, ruling from to , during the Golden Era of Sukhothai – a period of peace, harmony, stability, and prosperity. Thai alphabet created by King Ramkhamhaeng the great of Sukhothai.
King Ram Khamhaeng (Thai: พ่อขุนรามคำแหง ; rtgs: Pho Khun Ram Khamhaeng ; c. / – ) was the third king of the Phra Ruang dynasty, ruling the Sukhothai Kingdom (a forerunner of the modern kingdom of Thailand) from –, during its most prosperous era. Ramkhamhaeng, (born ?—died ), third king of Sukhothai in what is now north-central Thailand, who made his young and struggling kingdom into the first major Tai state in 13th-century Southeast Asia.
On the death of his brother, King Ban Muang, about , Ramkhamhaeng inherited his tiny kingdom of only a few hundred square miles. King Ram Khamhaeng (Thai: พ่อขุนรามคำแหง; rtgs: Pho Khun Ram Khamhaeng; c.
/ – ) was the third king of the Phra Ruang dynasty, ruling the Sukhothai Kingdom (a forerunner of the modern kingdom of Thailand) from –, during its most prosperous era.