Lan Na in the context of "Konbaung dynasty"

Thailand, officially the Kingdom of Thailand, and formerly known as Siam until 1939, is a country located in mainland Southeast Asia. It shares land borders with Myanmar to the west and northwest, Laos to the east and northeast, Cambodia to the southeast, and Malaysia to the south. Its maritime boundaries include the Gulf of Thailand and the Andaman Sea, as well as maritime borders with Vietnam, Indonesia, and India. Thailand has a population of nearly 66 million people, covers an area of approximately 513,115 km (198,115 sq mi). The country's capital and largest city is Bangkok.

Archaeological evidence indicates that humans have inhabited the area of present-day Thailand for at least 40,000 years. Indigenous ethnic groups include the Mon, Khmer, and Malay people. The Tai people are believed to have originated from the Điện Biên Phủ region since the 5th century and began migrating into the territory of modern Thailand between the 8th and 10th centuries origin of the Tai people. During the classical historical period, major kingdoms such as Sukhothai, Lan Na, and Ayutthaya were established. The Sukhothai Kingdom is regarded as the beginning of Thai history, while the Ayutthaya Kingdom, founded in 1350 CE, became a regional power replacing the Khmer Empire. European contact began in 1511 CE when Portuguese envoys arrived in Ayutthaya. The Ayutthaya Kingdom flourished until its complete destruction during the 1765–1767 Burmese–Siamese War by the Burmese forces under the Konbaung dynasty in 1767.

The Toungoo dynasty (Burmese: တောင်ငူမင်းဆက်, [tàʊɰ̃ŋù mɪ́ɰ̃ zɛʔ]; also spelt Taungoo dynasty, and also known as the Nyaungyan dynasty after 1599, was the ruling dynasty of Burma (Myanmar) from the mid-16th century to 1752. At its peak, Toungoo "exercised suzerainty from present-day Assam, Manipur to the Cambodian marches and from the borders of Arakan to Yunnan" and was the largest empire and the only great power country in the history of Southeast Asia." The dynasty ruled in two periods: the First Toungoo Empire (1510–1599) and the Nyaungyan Restoration (1599–1752).

Its early kings Tabinshwehti and Bayinnaung succeeded in reunifying the territories of the Pagan Kingdom for the first time since 1287 and in incorporating the Shan States for the first time, in addition to including Manipur, Chinese Shan States, Siam and Lan Xang. The empire collapsed in the 18 years following Bayinnaung's death in 1581. The dynasty quickly regrouped under the leadership of Nyaungyan Min and his son, Anaukpetlun, who succeeded in restoring a smaller, more manageable kingdom, encompassing Lower Burma, Upper Burma, Shan States and Lan Na by 1622. The Restored Toungoo kings, now based in Ava (Inwa), created a legal and political system whose basic features would continue under the Konbaung dynasty well into the 19th century. The crown completely replaced the hereditary chieftainships with appointed governorships in the entire Irrawaddy valley and greatly reduced the hereditary rights of Shan chiefs. Its trade and secular administrative reforms built a prosperous economy for more than 80 years.

The Thonburi Kingdom was a major Siamese kingdom which existed in Southeast Asia from 1767 to 1782, centred on the city of Thonburi, in Siam or present-day Thailand. The kingdom was founded by Taksin, who reunited Siam following the collapse of the Ayutthaya Kingdom, which saw the country separate into five warring regional states. The Thonburi Kingdom oversaw the rapid reunification and reestablishment of Siam as a preeminient military power within mainland Southeast Asia, overseeing the country's expansion to its greatest territorial extent up to that point in its history, incorporating Lan Na, the Laotian kingdoms (Luang Phrabang, Vientiane, Champasak), and Cambodia under the Siamese sphere of influence.

The Thonburi Kingdom saw the consolidation and continued growth of Chinese trade from Qing China, a continuation from the late Ayutthaya period (1688-1767), and the increased influence of the Chinese community in Siam, with Taksin and later monarchs sharing close connections and close family ties with the Sino-Siamese community.

Northern Thailand, or more specifically Lan Na, is a region of Thailand. It is geographically characterized by several mountain ranges, which continue from the Shan Hills in bordering Myanmar to Laos, and the river valleys that cut through them. Like most of Thailand, it has a tropical savanna climate, but its relatively high elevation and latitude contribute to more pronounced seasonal temperature variation, with cooler winters than the other regions.

Historically, northern Thailand has been linked to the Hariphunchai Kingdom, which emerged as a powerful state in the region in the 7th century. This kingdom was related to the Dvaravati that existed from the 6th to 11th centuries. The Hariphunchai culture later influenced the development of the Lanna Kingdom, which emerged in the 13th century and lasted until the 18th century.

The Northern Thai people, also known as Tai Yuan (Thai: ไทยวน, [tʰaj˧ juan˧]) or Khon Mueang (Northern Thai: ᨤᩫ᩠ᨶᨾᩮᩬᩥᨦ, คนเมือง pronounced [kʰon˧ mɯaŋ˧]), are a Tai ethnic group, native to nine provinces in Northern Thailand, principally in the area of the former kingdom of Lan Na. As a Tai group, they are closely related to Tai Lü and Tai Khün with regard to common culture, language and history in contrast to Thailand's dominant Thai ethnic group (referred to as Siamese or Central Thai). There are approximately 6 million Tai Yuan. Most of them live in Northern Thailand, with a small minority 29,442 (2005 census) living across the border in Bokeo Province of Laos. Their language is called Northern Thai, Lanna or Kham Mueang.

Yonok Nakhon Chaiburi Ratchathani Si Chang Saen (Northern Thai: ᩰᨿᨶᩫ᩠ᨠᨶᨣᩬᩁᨩᩱ᩠ᨿᨷᩩᩁᩦᩁᩣ᩠ᨩᨵᩣᨶᩦᩆᩕᩦᨩ᩶ᩣ᩠ᨦᩯᩈ᩠᩵ᨶ; Thai: โยนกนครไชยบุรีราชธานีศรีช้างแส่น) was a Tai semi-legendary kingdom based along the Kok River in the Chiang Rai Basin in northern Thailand, existed from 691 BCE to 638 CE. It was centered in Yonok Nahaphan (Chiang Saen District, Chiang Rai) and then moved to Wiang Prueksa (Fang District) after the old capital was submerged below Chiang Saen Lake due to an earthquake in 545.

Singhanati evolved into the Ngoenyang Kingdom in 638, which continued to the formation of Lan Na in 1292.

Bayinnaung Kyawhtin Nawrahta (16 January 1516 – 10 October 1581) was King of Burma from 30 April 1550 until his death in 1581, during the Toungoo dynasty. His reign is considered one of the most momentous in Burmese history, famously described as "the greatest explosion of human energy ever seen in Burma." During his rule, he assembled the largest empire in Southeast Asian history, which encompassed much of present-day Myanmar, as well as the Shan States, Lan Na, Lan Xang, Manipur, and the Ayutthaya Kingdom.

Though best remembered for his empire-building, Bayinnaung's most enduring legacy was the integration of the Shan States into the Irrawaddy valley administrative system. After conquering the Shan States between 1557 and 1563, he implemented a series of administrative reforms aimed at reducing the power of hereditary rulers, known as saophas, and aligning Shan governance and customs with lowland Burmese norms. These reforms effectively eliminated the persistent threat of Shan raids into Upper Burma, a source of instability since the 13th century. Bayinnaung's integration policy served as a model for successive Burmese monarchs, who continued his approach until 1885.