Northeastern India in the context of "Brahmaputra River"

Assam is a state in northeastern India, south of the eastern Himalayas along the Brahmaputra and Barak River valleys. Assam covers an area of 78,438 km (30,285 sq mi). It is the second largest state in northeastern India by area and the largest in terms of population, with more than 31 million inhabitants. The state is bordered by Bhutan and Arunachal Pradesh to the north; Nagaland and Manipur to the east; Meghalaya, Tripura, Mizoram and Bangladesh to the south; and West Bengal to the west via the Siliguri Corridor, a 22-kilometre-wide (14 mi) strip of land that connects the state to the rest of India. Assamese and Bodo are two of the official languages for the entire state and Meitei (Manipuri) is recognised as an additional official language in three districts of Barak Valley and Hojai district. in Hojai district and for the Barak Valley region, alongside Bengali, which is also an official language in the Barak Valley.

The state has 35 districts with 5 divisions. Guwahati (containing the state capital Dispur) is the largest city in northeastern India. Assam is known for Assam tea and Assam silk. The state was the first site for oil drilling in Asia. Assam is home to the one-horned Indian rhinoceros, along with the wild water buffalo, pygmy hog, tiger and various species of Asiatic birds, and provides one of the last wild habitats for the Asian elephant. The Assamese economy is aided by wildlife tourism to Kaziranga National Park and Manas National Park, which are World Heritage Sites. Dibru-Saikhowa National Park is famed for its feral horses. Sal tree forests are found in the state which, as a result of abundant rainfall, look green all year round. Assam receives more rainfall than most parts of India; this rain feeds the Brahmaputra River, whose tributaries and oxbow lakes provide the region with a distinctive hydro-geomorphic environment.

Mizoram is a state in northeastern India, with Aizawl as its capital and largest city. It shares 722-kilometres (449 miles) of international borders with Bangladesh to the west, and Myanmar to the east and south, with domestic borders with the Indian states of Assam, Manipur, and Tripura. It covers an area of 21,081 square kilometres (8,139 sq mi). Via satellite data forests cover 84.53% of Mizoram's area, making it the fourth most heavily forested state in India. With an estimated population of 1.26 million in 2023, it is the second least populated state in India. With an urbanisation rate of 51.5% it is the most urbanised state in northeast India, ranking fifth in urbanisation nationwide. One of the two official languages and most widely spoken tongue is Mizo, which serves as a lingua franca among various ethnic communities who speak a variety of other Tibeto-Burman or Indo-Aryan languages. Mizoram is home to the highest percentage of scheduled tribes in India, with the Mizo people forming the majority.

Early civilisations in Mizoram are believed to have thrived since around 600 BC, with significant archaeological evidence uncovered in the Vangchhia region. Following this, Tibeto-Burman-speaking peoples gradually migrated from the Chin Hills in present-day Myanmar. These groups formed organised chiefdoms and adopted jhum agricultural practices. By the 18th century, various clans in the region united to form the Mizo identity, becoming the dominant inhabitants of the area, introducing the Mizo language, culture, and the Sakhua religion. In the mid-19th century, the British conducted a series of military expeditions to assert control over the region, Mizoram was annexed by the British in 1895 and incorporated into the Assam Province. Under British rule, the introduction of administrative reforms and the spread of Christianity significantly impacted Mizo society.

The Karbi language (US: /kɑːrbi/ ) is a Tibeto-Burman language spoken by the Karbi (also known as Mikir or Arlêng) people of Northeastern India. It is also called Hills Karbi to differentiate it from Plains Karbi (Amri Karbi) which is variously treated as a variety of Karbi or its own language.

It belongs to the Sino-Tibetan language family, but its position is unclear. Grierson (1903) classified it under Naga languages, Shafer (1974) and Bradley (1997) classify the Mikir languages as an aberrant Kuki-Chin branch, but Thurgood (2003) leaves them unclassified within Sino-Tibetan. Blench and Post (2013) classify it as one of the most basal languages of the entire family.

The Kra–Dai languages (/ˈkrɑː.daɪ/ KRAH-dy, also known as Tai–Kadai /ˈtaɪ.kəˌdaɪ/ TIE-kə-DYE and Daic /ˈdaɪ.ɪk/ DYE-ik), are a language family in mainland Southeast Asia, southern China, and northeastern India. All languages in the family are tonal, including Thai and Lao, the national languages of Thailand and Laos, respectively. Around 93 million people speak Kra–Dai languages; 60% of those speak Thai. Ethnologue lists 95 languages in the family, with 62 of these being in the Tai branch.

The Brahmaputra Valley (also Assam Valley) is a region situated between hill ranges of the eastern Himalayan range of Assam in Northeastern India.

The valley consists of the Western Brahmaputra Valley covering the regions of Goalpara and Kamrup; Central Brahmaputra Valley region covering Darrang, Nagaon and the North Bank and Eastern Brahmaputra Valley comprising districts of Sonitpur, Lakhimpur, Dibrugarh and Sivasagar. The Teesta River in North Bengal also drains into Brahmaputra River.

The First Anglo-Burmese War (Burmese: ပထမအင်္ဂလိပ်-မြန်မာစစ်; [pətʰəma̰ ɪ́ɰ̃ɡəleiʔ-mjəmà sɪʔ]; 5 March 1824 – 24 February 1826), also known as the First Burma War in English language accounts and First English Invasion War (Burmese: ပထမအင်္ဂလိပ်ကျူးကျော်စစ်) in Burmese language accounts, 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 what is now Northeastern India, ended in a costly but decisive British victory, giving the British total control of Assam, Cachar, Manipur and Jaintia as well as Arakan Province and Tenasserim. The Burmese submitted to a British demand to pay an indemnity of one million pounds sterling, and signed a commercial treaty.

The war was one of the most expensive in British Indian history. 15,000 British soldiers died, together with an unknown number of Burmese military and civilian casualties. The high cost of the campaign to the British, 5–13 million pounds sterling (£500 million – £1.38 billion as of 2023) contributed to a severe economic crisis in British India which cost the East India Company its remaining privileges.