Q:Information:  - There were three Burmese invasions of Assam between 1817 and 1826, during which time the Kingdom of Assam (Ahom) came under the control of Burma from 1821 to 1825. Locally, this period, called the "manor din" by the Assamese and "Chahi-Taret Khuntakpa" (seven years of devastation) in Meitei, is remembered with horror. It was the climactic period of the 600-year history of the Assamese kingdom. The sharp drop in population due both to depredations as well emigrations left the erstwhile kingdom in shambles. The British, who were earlier reluctant to colonise Assam, came into direct contact with a belligerent Burmese occupying force. Following the First Anglo-Burmese War they annexed not just Assam but also Burma.  - Borgohain (Ahom language: "Chao Thao Lung") was the second of the two original counsellors in the Ahom kingdom. He was selected by the Ahom king from members of the Ahom nobility ("Satgharia Ahom"), who was not eligible for the position of Ahom kingship. The other original counsellor is the Burhagohain. Both the positions existed from the time of the first Ahom king, Sukaphaa. The Borgohain administered the region south of the Dikhow river to Koliabor.  - Buragohain ( Ahom language : Chao Phrang Mong ) was the first of the two original counsellors in the Ahom kingdom . He was selected by the Ahom king from members of the Ahom nobility ( Satgharia Ahom ) , who was not eligible for the position of Ahom kingship . The other original counsellor is the Borgohain . Both the positions existed from the time of the first Ahom king , Sukaphaa . The Burhagohain administered the region north of the Dikhow river up to Sadia .  - The East India Company (EIC), also known as the Honourable East India Company (HEIC) or the British East India Company and informally as John Company, was an English and later British joint-stock company, which was formed to pursue trade with the East Indies but ended up trading mainly with the Indian subcontinent and Qing China.  - Assam (; "Ôxôm" ; "Asam"; "Âshám" ) is a state in northeastern India. Located south of the eastern Himalayas, Assam comprises the Brahmaputra Valley and the Barak Valley along with the Karbi Anglong and Dima Hasao districts with an area of . Assam, along with Arunachal Pradesh, Nagaland, Manipur, Mizoram, Tripura, and Meghalaya, is one of the "Seven Sister States". Geographically, Assam and these states are connected to the rest of India via a strip of land in West Bengal called the Siliguri Corridor or "Chicken's Neck". Assam shares an international border with Bhutan and Bangladesh; and its culture, people and climate are similar to those of South-East Asia  comprising the elements in Indias Look East policy.  - India, officially the Republic of India ("Bhrat Gaarjya"), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country (with over 1.2 billion people), and the most populous democracy in the world. It is bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast. It shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the northeast; and Myanmar (Burma) and Bangladesh to the east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives. India's Andaman and Nicobar Islands share a maritime border with Thailand and Indonesia. Its capital is New Delhi; other metropolises include Mumbai, Kolkata, Chennai, Bangalore, Hyderabad and Ahmedabad.  - The Treaty of Yandabo was the peace treaty that ended the First Anglo-Burmese War. The treaty was signed on 24February 1826, nearly two years after the war formally broke out on 5March 1824, by General Sir Archibald Campbell on the British side, and the Governor of Legaing Maha Min Hla Kyaw Htin from the Burmese side. With the British army at Yandabo village, only from the capital Ava, the Burmese were forced to accept the British terms without discussion.  - The First Anglo-Burmese War, also known as the First Burma War, (5 March 1824  24 February 1826) was the first of three wars fought between the British and Burmese empires in the 19th century. The war, which began primarily over the control of Northeastern India, ended in a decisive British victory, giving the British total control of Assam, Manipur, Cachar and Jaintia as well as Arakan Province and Tenasserim. The Burmese were also forced to pay an indemnity of one million pounds sterling, and sign a commercial treaty.  - The Ahom language is a nearly extinct Tai language spoken by the Ahom people who ruled the Brahmaputra river valley in the present day Indian state of Assam between the 13th and the 18th centuries. The language is classified in a Northwestern subgrouping of Southwestern Tai owing to close affinities with Shan, Khamti and, more distantly, Thai. As the Ahom rulers of the area assimilated to the more numerous Assamese, the Indo-Aryan Assamese language gradually replaced Ahom as a spoken language, a process which became complete during the 19th century. As of 2000, Ahom was only known by approximately 200 priests of the traditional Ahom religion and only used for ceremonial or ritualistic purposes.  - Northeast India is the eastern-most region of India. It comprises of the contiguous Seven Sister States (Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, and Tripura), and the Himalayan state of Sikkim. The Siliguri Corridor in West Bengal, with a width of , connects the North Eastern region with East India. The region shares more than of international border (about 90 per cent of its entire border area) with China (southern Tibet) in the north, Myanmar in the east, Bangladesh in the southwest, and Bhutan to the northwest.  - The Moamoria rebellion (17691806) was the 18th century conflict between the Morans, adherents of the Moamara Sattra, and the Ahom kings. This led to widespread popular discontent against the Ahom king and the nobles and to two periods in which the Ahom king lost control of the capital. Retaking the capital was accompanied by a massacre of subjects, leading to a steep depopulation of large tracts. The Ahom king failed to retake the entire kingdom, a portion in the north-east, Bengmara, became virtually independent.  - "Genealogically, Assamese belongs to the group of Eastern Indo-Aryan languages"  Assamese, Asamiya or Ôxômiya (Assamese: , "") is an Eastern Indo-Aryan language spoken mainly in the state of Assam, where it is an official language. The easternmost of the Indo-Aryan languages, it is spoken by over 13 million native speakers, and serves as a "lingua franca" in the region. It is also spoken in parts of Arunachal Pradesh and other northeast Indian states. Nagamese, an Assamese-based Creole language is widely used in Nagaland and parts of Assam. Nefamese is an Assamese-based pidgin used in Arunachal Pradesh. Small pockets of Assamese speakers can be found in Bangladesh. In the past, it was the court language of the Ahom kingdom from the 17th century.  - The Ahom kingdom (12281826, also called "Kingdom of Assam") was a kingdom in the Brahmaputra Valley in Assam, India that maintained its sovereignty for nearly 600 years and successfully resisted Mughal expansion in Northeast India. Established by Sukaphaa, a Tai prince from Mong Mao, it began as a mong in the upper reaches of the Brahmaputra based on wet rice agriculture. It expanded suddenly under Suhungmung in the 16th century and became multi-ethnic in character, casting a profound effect on the political and social life in the entire Brahmaputra valley. The kingdom became weaker with the rise of the Moamoria rebellion, and subsequently fell to repeated Burmese invasions of Assam. With the defeat of the Burmese after the First Anglo-Burmese War and the Treaty of Yandabo in 1826, control of the kingdom passed into East India Company hands.  - Mong Mao, Möngmao or "Mao kingdom" ("Mong" is the etymological equivalent of Thai "Mueang", meaning nation) was an ethnically Dai state that controlled several smaller Tai states or chieftainships along the frontier of what is now Myanmar and China in the Dehong region of Yunnan with a capital near the modern-day border town of Ruili. The name of the main river in this region is the Nam Mao, also known as the Shweli River.  - Suhungmung (reign 14971539) (Swarganarayan, Dihingia Raja) (Assamese:  ) was one of the most important Ahom kings, who ruled at the cusp of Assam's medieval history. His reign broke from the early Ahom rule and established a multi-ethnic polity in his kingdom. Under him the Ahom Kingdom expanded greatly for the first time since Sukaphaa, at the cost of the Sutiya and the Kachari kingdoms. He also successfully defended his kingdom against the first Muslim invasions under Turbak Khan. During his time, the Khen dynasty collapsed and the Koch dynasty ascended in the Kamata kingdom. His general, Tonkham, pursued the Muslims up to the Karatoya river, the western boundary of the erstwhile Kamarupa Kingdom, the farthest west an Ahom king had ventured in its entire six hundred years of rule.  - The Ahom (Pron: , , people of Assam) are the descendants of the ethnic Tai people that accompanied the Tai prince into the Brahmaputra valley in 1228 and ruled the area for six centuries. Sukaphaa and his followers established the Ahom kingdom (12281826) and the Ahom dynasty ruled and expanded the kingdom until the British gained control of the region through the Treaty of Yandabo upon winning the First Anglo-Burmese War in 1826.    Given the paragraphs above, decide what entity has the relation 'subclass of' with 'official'.
A:
burhagohain