The earliest name of Assam in ancient literature is Pragjyotisha, meaning the 'city of eastern astrology', while the powerful kingdom that grew around it was called Kamarupa. Kamarupa is described in the two great epics, the Mahabharata and the Ramayana, and is closely associated with the Naraka dynasty.

According to tradition, Narakasura was the founder of the Bhauma or Asura dynasty. He is said to have been killed by Lord Krishna. His son Bhagadatta fought on the side of the Kauravas in the Mahabharata war and is praised for his elephant-warfare skills.

The first historically confirmed dynasty of Assam is the Varman dynasty. Its most celebrated ruler was Bhaskarvarman, a contemporary of King Harshavardhana of Kannauj. Bhaskarvarman sent an embassy led by his minister Hamsavega, and later the famous Chinese pilgrim Hiuen Tsang visited Kamarupa during his reign.

Kamarupa is also referred to in the Puranas and in ancient Tantric texts such as the Kalika Purana and the Yogini Tantra, which describe it as a sacred land of goddess worship. In the Mahabharata, the kingdom of Pragjyotisha is described as a land of fierce warriors and as the territory of the Narakas and the Kiratas. The name Assam itself is generally believed to be derived from the word 'Asom', connected with the Ahoms, who arrived much later in the thirteenth century.

For every competitive exam, remember the story in this sequence: the mythological Naraka dynasty (Narakasura, Bhagadatta) → the purely historical Varman dynasty (Pushyavarman onward) → the medieval kingdoms of the Ahoms and others.

Key points to remember:

• Pragjyotisha was the ancient name of the Assam region; Kamarupa was the kingdom.
• The epics Mahabharata and Ramayana mention Kamarupa.
• Narakasura founded the Bhauma/Asura (Naraka) dynasty; he was killed by Krishna.
• Bhagadatta, son of Narakasura, fought in the Mahabharata war for the Kauravas.
• The Kalika Purana and Yogini Tantra describe Kamarupa as a land of Tantra worship.
• The Varman dynasty was the first fully historical ruling family of Assam.
• Bhaskarvarman (Varman dynasty) was a contemporary of Harshavardhana.
• Hiuen Tsang visited Kamarupa during the reign of Bhaskarvarman.
• The Nidhanpur copper plate inscription is a famous Varman-era record.

After the legendary Naraka dynasty, the history of ancient Kamarupa becomes firm and datable with three ruling houses: the Varman dynasty, the Mlechchha (Salastambha) dynasty and the Pala dynasty of Kamarupa. Together they ruled from about the fourth century to the twelfth century AD.

1. The Varman dynasty (c. 350–650 AD): The founder was Pushyavarman, who is mentioned in the Allahabad pillar inscription of the Gupta emperor Samudragupta as a frontier ruler of the north-east. His successors slowly consolidated the kingdom. The greatest Varman king was Bhaskarvarman (c. 594–650 AD), a contemporary of Harshavardhana. He sent an embassy with his minister Hamsavega to Harsha, and later allied with him. The Chinese pilgrim Hiuen Tsang visited Kamarupa around 643 AD and has left a valuable account of the kingdom and its capital Pragjyotishpura (near present-day Guwahati). The Nidhanpur copper plates of Bhaskarvarman record a grant of land in present-day Sylhet region. With the death of Bhaskarvarman, who had no son, the Varman line ended around 650 AD.

2. The Mlechchha (Salastambha) dynasty (c. 655–900 AD): The founder was Salastambha. Though the term 'Mlechchha' means foreigner or non-Aryan, the dynasty had gradually become Indianised. Their capital was at Harruppesvara, identified with modern Tezpur. The Mlechchha rulers patronised the worship of Shiva and left a fine legacy of art, seen in the ruins of Tezpur (Agnigarh, Bamuni hills).

3. The Pala dynasty of Kamarupa (c. 900–1120 AD): This dynasty is different from the better-known Pala dynasty of Bengal. It was founded by Brahmapala. The Pala kings of Kamarupa shifted their capital to a place near present-day North Guwahati (Durjaya). The last prominent ruler was Jayapala, who was defeated by the Bengal ruler Ramapala around 1120 AD. After this, the unified kingdom of Kamarupa broke up into smaller states such as Kamata in the west, and the Kachari, Chutiya and Baro-Bhuyan territories in the east.

Epigraphic sources (copper plates, stone inscriptions), the accounts of Hiuen Tsang, and the buranjis of the later period together allow us to reconstruct this long history.

Key points to remember:

• Three historical dynasties of Kamarupa: Varman, Mlechchha (Salastambha) and Pala.
• Pushyavarman was the founder of the Varman dynasty (c. 350 AD).
• Kamarupa is named in Samudragupta's Allahabad pillar inscription.
• Bhaskarvarman was the greatest Varman king and a contemporary of Harshavardhana.
• Hiuen Tsang visited Kamarupa in c. 643 AD; the capital was Pragjyotishpura.
• The Nidhanpur copper plates belong to Bhaskarvarman.
• Salastambha founded the Mlechchha dynasty; their capital was Harruppesvara (Tezpur).
• Brahmapala founded the Kamarupa Pala dynasty; it is NOT the Bengal Pala dynasty.
• The Pala dynasty of Kamarupa ended with Jayapala (defeated c. 1120 AD).
• After the fall of Kamarupa, Kamata and the Kachari, Chutiya and Bhuyan states emerged.

The Ahoms were a Tai (Shan) people who originally lived in the land of Mong Mao (in present-day Yunnan / eastern Myanmar). Their leader Sukapha left his homeland around 1215 AD, wandered for many years with his followers, crossed the Patkai mountain range and finally entered the Brahmaputra valley in 1228 AD. This is the most important date in Ahom history. Sukapha established his first capital at Charaideo (near present-day Sivasagar) and slowly brought the local tribes such as the Morans and Borahis under his control. He married into local families, adopted local customs, and so the small Tai band gradually grew into a powerful kingdom.

Sukapha himself was known by the title Chao-Pha, meaning 'Lord of Heaven' or 'the great ruler'. Over the following centuries the Ahom kings absorbed the Assamese language, culture and religion, while at the same time they gave Assam its name — the word 'Asom' or 'Ahom' gradually became the name of the whole land.

Important later kings of the early phase:

• Sukhangpha and his successors slowly expanded the territory.
• Suhungmung, also called the Dihingia Raja (reigned 1497–1539), was the great expander. He defeated and annexed the Chutiya kingdom in the east and pushed the Kacharis down to the south. He was the first Ahom king to take the title Swargadeo and he encouraged the use of the Assamese language in his court.
• Suklenmung (Gargayan Raja) shifted the capital from Charaideo to Garhgaon.
• During the reign of Susenghphaa, called Pratap Singha (1603–1641), the Ahoms consolidated their administration in Lower Assam and came into direct conflict with the Mughals.

Where the capitals moved: Charaideo (Sukapha's first capital) → Garhgaon (from the mid-sixteenth century) → Rangpur (built by Rudra Singha) → Jorhat (the last capital, under Gaurinath Singha).

Key points to remember:

• Sukapha entered Assam in 1228 AD and founded the Ahom kingdom.
• The Ahoms came from Mong Mao, crossing the Patkai hills; they were a Tai/Shan people.
• The first capital of the Ahoms was at Charaideo.
• Sukapha's title was Chao-Pha (Swargadeo later); the word 'Ahom'/'Asom' gave Assam its name.
• Suhungmung (Dihingia Raja) defeated the Chutiyas and Kacharis; first to use the title Swargadeo.
• Suklenmung moved the capital to Garhgaon.
• Capital sequence: Charaideo → Garhgaon → Rangpur → Jorhat.

The Ahom administration was built on the Paik system, under which every adult male (roughly between the ages of fifteen and fifty) had to render service to the state. Under this system, each paik was allotted a piece of land (generally two puras of wet-rice land) for his maintenance, and in return he had to serve the king or work on public projects. Paiks were organised into groups; the basic unit was the 'got' (generally four paiks together), and larger bodies of paiks were formed into 'khels'. A khel was thus an administrative and professional unit — one khel looked after boats, another supplied soldiers, another worked on royal construction, and so on. Since only a part of each got served at a time, the rest could cultivate their fields. This clever system gave the Ahom state soldiers, labourers and revenue without paying cash salaries.

The top of the administration was the king (the Swargadeo). Under him stood a council of great ministers/officers:

• The two highest ministers were the Burhagohain and the Borgohain, chosen from two great noble clans; they were almost like regents and could even place a new king on the throne.
• Later a third gohain, the Borpatrogohain, was added.
• The Barbarua was the chief executive and judicial officer of the state, and the Borphukan was the great military governor / viceroy of Lower Assam (with headquarters in the Guwahati region).
• Other important officers included the Sadiya Khowa Gohain (in charge of the eastern frontier), the Naobaicha Phukan (in charge of the royal navy/boats), the Dihingia Phukan, the Bhandari Barua (treasury) and many more phukans and baruas.

Land revenue and the state: the paiks and their produce sustained the whole machinery. There was little use of money; most payments were made in kind or in service. Later, under kings like Rudra Singha, coins were also introduced.

The Buranjis: the Ahoms maintained royal chronicles called Buranjis, written in the Ahom language (and later also in Assamese). They recorded royal genealogies, wars, treaties and state affairs and are the most valuable source of medieval Assamese history. Under Suhungmung and later kings these were written regularly by official record keepers.

The Ahoms also showed religious tolerance. Over time many kings embraced the Vaishnavite faith of Sankardeva, while others remained attached to the older Tai rites and to Shiva worship; a few even patronised Islam (such as the influence of the Sufi saint Ajan Pir at the court of the Ahom kings of the seventeenth century).

Key points to remember:

• The Paik system: every adult male rendered service to the state.
• Paiks were organised into groups called Khels (unit within: 'got').
• Under the paik system each man received land (about 2 puras) instead of salary.
• The two highest ministers were the Burhagohain and the Borgohain.
• The Barbarua looked after the executive/judicial work; the Borphukan governed Lower Assam.
• The eastern frontier was guarded by the Sadiya Khowa Gohain.
• Buranjis are the Ahom historical chronicles, written in the Ahom language.
• The state worked mostly on service and goods, not cash; coins came in later.
• The Ahoms practised religious tolerance (Vaishnavism, Shaivism, and Sufi/Ajan Pir influence).

The struggle between the Ahom kingdom and the Mughal empire is one of the most heroic chapters of Assamese history. The Mughals, after conquering Bengal, wanted to extend their power into the Brahmaputra valley, but the Ahoms resisted them again and again between 1615 and 1682.

Main events in order:

• 1615: The first Mughal expedition reached the Ahom frontier during the reign of Pratap Singha, but the Ahoms held their ground.
• 1639: After several campaigns, a peace was concluded at Asurar Ali between the Mughal commander Allah Yar Khan and the Ahom king. The Ahoms agreed to nominal submission and paid tribute in elephants; the river Barnadi was made the boundary.
• 1662: Mir Jumla, the Mughal governor (subahdar) of Bengal, launched a massive invasion of Assam. He occupied the Ahom capital Garhgaon and the Ahom king had to flee towards Namrup. However, disease and the difficult terrain forced Mir Jumla to retreat, and he died soon after.
• 1663: By the Treaty of Ghilajharighat, the Ahoms had to accept Mughal terms — a heavy indemnity and the loss of territory up to the Bharali river. This humiliation deeply wounded the pride of the Ahoms.
• 1667: The new king Chakradhwaj Singha (1663–1670) resolved to drive out the Mughals. He appointed the brave Lachit Borphukan as the commander of the Ahom forces, and Guwahati was recaptured.
• 1671: The Mughal emperor Aurangzeb sent a huge army under Raja Ram Singh to reconquer Assam. Lachit Borphukan met him at Saraighat (the narrow stretch of the Brahmaputra near Guwahati). Using clever naval tactics, war-boats and the natural advantage of the river, the much smaller Ahom force completely defeated the Mughal fleet. This Battle of Saraighat is the most celebrated victory in Ahom history and it saved Assam from Mughal occupation. Lachit Borphukan died in 1672 and is honoured to this day as Assam's greatest military hero.
• 1679–1681: During a weak period the Mughals again seized Guwahati with the help of the treacherous general Laluk Sola Borphukan.
• 1682: The resolute king Gadadhar Singha (1681–1696) launched a final campaign. The Mughals were defeated at the Battle of Itakhuli and driven out of Assam for ever; the river Manas became the permanent boundary between the Mughal territory and the Ahom kingdom.

Key points to remember:

• Ahom–Mughal conflicts lasted from 1615 to 1682.
• Treaty of Asurar Ali (1639): between Allah Yar Khan and the Ahoms (Pratap Singha's reign); elephants were paid as tribute.
• Mir Jumla invaded Assam in 1662 and occupied Garhgaon; Treaty of Ghilajharighat followed in 1663.
• Chakradhwaj Singha resolved to expel the Mughals and appointed Lachit Borphukan.
• Battle of Saraighat: 1671; Lachit Borphukan defeated the Mughal army of Raja Ram Singh.
• Guwahati was again lost in 1679 (Laluk Sola Borphukan's treachery).
• 1682: Gadadhar Singha expelled the Mughals for ever after the Battle of Itakhuli.
• The river Manas became the boundary between the Ahom kingdom and the Mughal empire.

After the fall of the Kamata (western) branch of the old Kamarupa kingdom, the region was ruled for a time by the Khen dynasty, whose last king Nilambar was defeated by the Bengal sultan Alauddin Hussain Shah in 1498. Out of this chaos the Koch kingdom rose in the sixteenth century.

The Koch were originally a local tribe of the north-western Brahmaputra region. Biswa Singha is regarded as the true founder of the Koch royal dynasty (he ruled in the early sixteenth century). He built his capital at Koch Bihar and expanded his power over the Koch, Mech and neighbouring peoples.

The greatest king of the dynasty was his son Naranarayana (Malla Narayana), who ruled from about 1540 to 1587. He raised the kingdom to its highest glory, and his brilliant younger brother Sukladhwaj, better known as Chilarai (the 'kite', for the speed of his campaigns), conquered a vast area. Chilarai's campaigns took the Koch armies over much of the Brahmaputra valley, defeated the Ahoms (around 1562 the Ahom king Suklenmung was forced to pay tribute) and extended Koch influence over the Kachari and other neighbouring states. The Koch kingdom at its height stretched from the river Karatoya in the west to a large part of present-day western and central Assam.

Koch rule is remembered for peace, trade and culture. Naranarayana's court at Koch Bihar was a centre of learning; it was during his reign that the great saint-reformer Srimanta Sankardeva and his chief disciple Madhavdeva lived and worked under royal patronage. The kingdom was also one of the first in the region to build strong relations with the Mughals.

After the death of Naranarayana the kingdom split into two parts: the western half, Koch Bihar, ruled by Naranarayana's son; and the eastern half, Koch Hajo, which came to be ruled by Raghudev, son of Chilarai. Koch Hajo (with its centre at Hajo and covering much of present-day western Assam) later became a bone of contention between the Ahoms and the Mughals, and its territories were eventually absorbed between these two powers.

Key points to remember:

• The Khen dynasty of Kamata ended when Nilambar was defeated by Alauddin Hussain Shah of Bengal in 1498.
• Biswa Singha founded the Koch royal dynasty; his capital was Koch Bihar.
• Naranarayana (1540–1587) was the greatest Koch king.
• Sukladhwaj, called Chilarai, was Naranarayana's brother and a famous general.
• Chilarai defeated the Ahoms and made them pay tribute (c. 1562).
• Sankardeva and Madhavdeva flourished under the patronage of Naranarayana.
• After Naranarayana, the kingdom split into Koch Bihar (west) and Koch Hajo (east).
• Koch Hajo became a disputed region between the Ahoms and the Mughals.

Apart from the Ahoms and the Koches, medieval Assam contained several other powerful kingdoms and chieftaincies. Three of the most important were the Chutiya, the Kachari (Dimasa) and the Jaintia kingdoms, together with the loose confederacy of the Baro-Bhuyans.

1. The Chutiya kingdom: The Chutiyas were a Mongoloid people who built a strong kingdom in eastern Assam, with their centre at Sadiya and control over the region between the rivers Dikhou and Dihang (on both banks of the Brahmaputra). They had a developed culture and an early script of their own. For a long time they were rivals of the rising Ahom power. Finally the Ahom king Suhungmung (Dihingia Raja) conquered the Chutiya kingdom around 1523 AD. The conquered region was placed under an officer called the Sadiya Khowa Gohain.

2. The Kachari (Dimasa) kingdom: The Kacharis, one of the oldest peoples of Assam, ruled a large territory in the south and south-east of the Brahmaputra valley and in the Barak valley. Their early capital was at Dimapur (in the present Dimapur area of Nagaland), famous for its rows of stone pillars and gateways. After their defeat by the Ahoms in the sixteenth century (around 1536), they shifted their capital first to Maibang in the North Cachar hills and later to Khaspur in the Cachar plains. The Dimasa Kachari kings followed their own traditional religion and customs and sometimes fought, sometimes allied with, the Ahoms. The Cachar (Kachari) kingdom continued to exist till the Burmese invasions and the coming of the British.

3. The Jaintia kingdom: In the Jaintia hills (present-day Meghalaya) and in the adjoining plains there grew up the Jaintia kingdom, ruled by the Jaintia (Synteng/Pnar) people, with its capital at Jaintiapur. The Jaintias practised a matrilineal system, and their society was organised around the traditional Durbar of chiefs. The Jaintia kings had varying relations — sometimes friendly, sometimes hostile — with the Ahoms, the Koches and the Mughals, and controlled the strategic route between the Brahmaputra and the Surma valleys.

4. The Baro-Bhuyans: In the thirteenth to sixteenth centuries the fertile lands of central and western Assam were divided among a number of local land-holding chiefs called Bhuyans, traditionally said to be 'twelve' in number (Baro-Bhuyans). They were independent-minded lords who resisted the Ahoms, the Koches and the Mughals as the occasion demanded. The family of Srimanta Sankardeva belonged to this Bhuyan class.

Key points to remember:

• The Chutiya kingdom was centred at Sadiya in eastern Assam.
• Suhungmung conquered the Chutiyas around 1523; the region was put under the Sadiya Khowa Gohain.
• The Kachari (Dimasa) kingdom had its early capital at Dimapur.
• After Ahom pressure the Kacharis shifted to Maibang, then to Khaspur (Cachar).
• The Jaintia kingdom, capital Jaintiapur, was in the Jaintia hills and adjoining plains.
• The Jaintias had a matrilineal social system and a Durbar of chiefs.
• The Baro-Bhuyans were local chiefs of central-western Assam in medieval times.
• Sankardeva's family belonged to the Bhuyan class.

The most important cultural and religious development of medieval Assam was the Neo-Vaishnavite movement founded by Srimanta Sankardeva. It gave Assam a common faith, a common literature and a common cultural identity.

Srimanta Sankardeva was born in 1449 at Alipukhuri near Bordowa (Batadrava) in present-day Nagaon district, in a family of the Bhuyan class. His parents were Kusumvara and Satyasandhya. Orphaned early, he was brought up by his grandmother Khersuti. As a young man he managed the family estates and studied the scriptures. He made a long pilgrimage (circa 1481–1493) across northern India, visiting holy places including Jagannath Puri.

Sankardeva preached a reformed faith called the Eka Sharana Nama Dharma — devotion to a single God (Krishna/Vishnu) through the chanting of His name (nama), and surrender (sarana) to Him. He rejected image-worship, elaborate sacrifices and caste distinctions, and threw open the doors of devotion to every person — high or low, Hindu, tribal or even Muslim. This made the movement extraordinarily popular across all sections of Assamese society.

His institutions changed the face of Assamese religious life:

• The Namghar (prayer house) — the community centre where people gathered to sing, pray and hold the kirtan.
• The Sattra — the monastery-cum-cultural centre established to train devotees and preserve the faith. The first sattra grew around his birthplace at Bordowa.

Sankardeva was also a literary and artistic genius. He wrote the Kirtana Ghosha (his masterpiece), translated portions of the Bhagavata Purana including the Dasama, wrote plays (such as Cihna Yatra, the first drama of Assam, and the later Ankia Nats), composed devotional lyrics (Borgeets), and introduced the Sattriya dance and Assamese manuscript painting. His songs and plays used an early literary language called Brajavali, so that all common people could understand them.

Madhavdeva (1489–1596) was Sankardeva's foremost disciple and his successor as the head of the movement. He was a great poet in his own right: his Namghosa (book of prayers) is regarded as the greatest work of Assamese devotional literature, and he composed many borgeets as well. After Sankardeva's death at Bheladanga (in the Koch Bihar region) in 1568, Madhavdeva organised the sattras and kept the movement united until his own death in 1596.

Later, the movement was organised into sects such as the Brahma Sanghati (the monastic, celibate order connected with Damodardev) and the Purusha Sanghati (the householder order), and it spread widely — receiving the patronage of the Koch kings, and later of the Ahom kings, many of whom (like Jayadhwaj Singha) became followers. The neo-Vaishnavite movement is the single greatest unifying force in Assamese culture and history.

Key points to remember:

• Sankardeva was born in 1449 at Bordowa (Nagaon district); his parents were Kusumvara and Satyasandhya.
• He founded the Eka Sharana Nama Dharma (Neo-Vaishnavism).
• The faith rests on nama (chanting of God's name) and sarana (surrender); it rejected caste barriers.
• Namghar and Sattra are the two great institutions created by the movement.
• His main writings: Kirtana Ghosha, translations of the Bhagavata, plays (Cihna Yatra), borgeets and ankiya nats.
• He introduced Sattriya dance and manuscript painting; used the Brajavali language.
• Sankardeva died in 1568 at Bheladanga.
• Madhavdeva (1489–1596), his chief disciple, wrote the Namghosa and led the movement after 1568.
• Later sects included the Brahma Sanghati and the Purusha Sanghati.
• Ahom and Koch kings patronised the movement, giving Assam cultural unity.

The later period of the Ahom kingdom (from about 1681 onwards) first saw a brilliant recovery, and then a slow and painful decline. The last great constructive king was Rudra Singha (1696–1714), who brought the kingdom to a peak of power, reformed the administration and planned a grand campaign against the Mughals which was cut short by his death. His son Siva Singha (1714–1744) continued the tradition of building; the famous Sivasagar tanks and temples were constructed during his queens' time. Under kings like Pramatta Singha and Rajeswar Singha the kingdom still seemed strong, but beneath the surface serious problems were growing.

Two major causes of decline stand out:

1. Religious and social discontent: The Neo-Vaishnavite sattras had grown numerous and powerful. One of them, the Moamara (Mayamara) sattra, founded by Aniruddhadev, admitted many low-caste and tribal followers, especially the Morans. Its followers, called Moamarias, were treated with contempt by the orthodox Ahom nobility.

2. Court intrigues and weak kings: Frequent conspiracies, incompetent kings, corrupt ministers and a crushing burden on the paiks sapped the strength of the state.

The Moamoria rebellion: In 1769, during the reign of Lakshmi Singha, the Moamarias rose in a violent revolt. They captured the capital Garhgaon, put one of their leaders on the throne and for a time held power. The Ahom king had to flee, and order was restored only after a bitter civil war. The rebellion was repeated several times, and each rising shook the kingdom further.

During the reign of Gaurinath Singha (1780–1795) the disturbances were so serious that he sought outside help. In 1792 the British Governor-General Lord Cornwallis sent a small force under Captain Welsh to restore order. Captain Welsh restored some peace but was soon recalled; his mission marks the first direct contact between the British and the Ahom government. The kingdom, however, never fully recovered. The once efficient Paik system had broken down, the royal treasury was empty, and a large part of the country was ruined by civil war.

After Gaurinath Singha, kings such as Kamaleswar Singha (1795–1811) and Chandrakanta Singha (1811–1818) could not stop the rot. Real power came to rest with the great minister, the Burhagohain Purnananda and later his rivals. Desperate court factions began to look outside the kingdom for help — and that outside help came from the Burmese, bringing the Ahom rule to a complete end.

Key points to remember:

• Rudra Singha (1696–1714) was the last great king of the Ahom 'golden age'.
• Sivasagar tanks and temples were built in the time of Siva Singha and his queens.
• The Moamara (Mayamara) sattra was founded by Aniruddhadev; its followers were the Moamarias.
• The Moamoria rebellion broke out in 1769 during the reign of Lakshmi Singha.
• Captain Welsh was sent (1792–94) to help Gaurinath Singha restore order.
• Weak kings, court intrigues and a broken Paik system caused the decline.
• Desperate factions invited the Burmese, which ended Ahom rule.

In the early nineteenth century the internal quarrels of the Ahom court took a disastrous turn. A powerful new Burmese kingdom (the Konbaung dynasty) had risen in Myanmar, and one faction of the Ahom nobility invited the Burmese to help it against its rivals.

The three Burmese invasions of Assam:

• First invasion (1817): A Burmese force entered Assam to support one court faction. The Burmese interference began a period of chaos.
• Second invasion (1819): The Burmese returned, drove out the reigning king and placed their own candidate, Chandrakanta Singha, on the Ahom throne.
• Third invasion (1821–1822): Led by the famous Burmese general Maha Bandula, this invasion crushed all resistance. The Burmese looted the country, destroyed temples and villages, and treated the people with great cruelty. The last independent Ahom king, Chandrakanta Singha, fled to Guwahati and then to the hills. The once-great Ahom kingdom collapsed, and a large part of the population was killed or carried off by the invaders. This disastrous period is remembered as the 'Manor' (dark age) of Assamese history.

The Burmese did not stop at Assam. They also threatened the British territories in Bengal, attacked the British-protected state of Manipur and even raided the borders of the Company's eastern possessions. The British could not tolerate this danger on their frontier.

The First Anglo-Burmese War (1824–1826): The British East India Company declared war on Burma in 1824. British land and naval forces under commanders such as General Sir Archibald Campbell advanced into Burma, while other columns moved through Assam and Arakan. The Burmese were defeated on several fronts; Maha Bandula himself was killed in battle in 1825.

The Treaty of Yandabo: The war ended with the Treaty of Yandabo, signed on 24 February 1826 in the village of Yandabo on the Irrawaddy river, between General Archibald Campbell (for the British East India Company) and the Burmese king Bagyidaw. By this treaty the Burmese gave up their claims over Assam, Manipur, Arakan and the Tenasserim coastal region, and also paid a large war indemnity. Thus, Assam passed completely into the hands of the British East India Company, and the long history of Ahom rule (1228–1826) came to an end.

Key points to remember:

• There were three Burmese invasions of Assam: 1817, 1819 and 1821–22.
• The third invasion was led by the Burmese general Maha Bandula.
• The Burmese occupation ruined Assam; the period is remembered as a dark age.
• The First Anglo-Burmese War was fought in 1824–26.
• The Treaty of Yandabo was signed on 24 February 1826.
• By the treaty Burma renounced Assam, Manipur, Arakan and Tenasserim.
• Assam came under British East India Company rule in 1826, ending Ahom rule.
• Ahom rule lasted from 1228 to 1826 (about six hundred years).

Assam came under British rule after the Treaty of Yandabo in 1826, which ended the First Anglo-Burmese War. The British annexed the Ahom kingdom, and at first the whole region was administered as part of the Bengal Presidency. The last Ahom king, Purandar Singha, was restored for a time as a tributary ruler of Upper Assam in 1833, but he was finally deposed in 1838 and Upper Assam was directly annexed by the Company. So the old Ahom monarchy came to a complete end.

The British organised their new possession step by step:

• David Scott became the first Commissioner of Assam (1828) and laid down the foundations of administration.
• The British had to fight a number of local wars to complete their conquest — the most notable being the Khasi rebellion led by U Tirot Sing (1829–1833) against British attempts to build a road through the Khasi hills.
• Assam was later merged administratively with the Bengal Presidency.
• In 1874 Assam was made a separate Chief Commissioner's province, with Shillong as its capital (chosen for its cool climate). Sir Richard Temple was the first Chief Commissioner.
• In 1905, the British partitioned Bengal and joined Assam with the new province of Eastern Bengal and Assam, with its capital at Dacca. This measure was deeply resented and became the starting point of the Swadeshi movement in the region. The partition was annulled in 1911, and in 1912 Assam again became a separate province (still under a Chief Commissioner).
• In 1921, under the reforms of the Government of India Act 1919, Assam was made a Governor's province and a Legislative Council was established, with a system of dyarchy.

Modern administration, education and communication now slowly entered Assam:

• American Baptist missionaries (Nathan Brown, O.T. Cutter and others) set up the first printing press in Assam at Sivasagar in 1836 and started schools.
• The first Assamese periodical, the Arunodoi, was brought out from Sivasagar in 1846.
• The first Assamese grammar (by Nathan Brown) and other books helped the growth of the modern Assamese language, which had earlier been neglected when the British first made Bengali the language of the courts and schools.

The old Ahom system of government was replaced by British laws, courts, police and revenue settlements, and Assam was slowly absorbed into the colonial system of British India.

Key points to remember:

• The Treaty of Yandabo (1826) brought Assam under British rule.
• David Scott was the first Commissioner of Assam.
• Purandar Singha, the last Ahom king, was deposed for good in 1838.
• The Khasi rebellion (1829–33) was led by U Tirot Sing.
• In 1874 Assam became a separate province with Shillong as its capital.
• In 1905 Assam was joined with Eastern Bengal and Assam (capital Dacca); this was annulled in 1911.
• In 1921 Assam became a Governor's province.
• The first printing press in Assam was set up at Sivasagar in 1836.
• The first Assamese periodical, the Arunodoi, appeared in 1846.

Under British rule Assam's economy was transformed completely. The most dramatic change came with tea. The British had long searched for a source of tea outside China. It was Robert Bruce who, in 1823, found wild tea plants growing in the Singpho country of Upper Assam. After experiments, the tea industry was launched commercially: the first tea company, the Assam Tea Company, was formed in 1839, the first consignment of Assam tea reached London in 1838, and soon tea gardens spread over the valley.

The tea industry brought a new economy and a new society to Assam:

• Huge areas of forest and wasteland were cleared for tea gardens.
• A very large number of labourers were brought from outside Assam (from Chotanagpur, Bihar, Odisha and other areas) under contract to work in the gardens. These labourers and their descendants are the 'tea tribes' of Assam today.
• The conditions of the tea workers were often very harsh, with low wages and strict control by the planters.
• Tea made Assam the most important tea-producing region of the British empire and gave the planters great power over the administration.

The other great change was communication:

• Steamer services began on the Brahmaputra from the 1860s.
• Railways were laid from the 1880s (the first line connected Dibrugarh with Margherita), and later railways linked Assam with the rest of India.
• Coal from the Makum–Ledo fields and, most remarkably, petroleum from Digboi — where the first oil well of Asia was drilled and the Digboi refinery (1901) was the first oil refinery in Asia — fed the new industries.

Immigration and the Line System:

• After annexation the British encouraged the settlement of cultivators from the densely populated districts of East Bengal (present-day Bangladesh) in the sparsely populated wastelands of Assam. The Government of India even pushed 'wasteland settlement' rules and later 'grow-more-food' campaigns (during the Second World War).
• From the early twentieth century, and especially after the 1920s, immigration on a very large scale began to change the demography of the Brahmaputra valley, particularly in districts such as Nagaon, Barpeta and Goalpara.
• To reduce friction between the immigrant settlers and the local population, the British introduced the 'Line System' — a scheme under which the migrants were settled in separate 'lines' or blocks, separated by reserved land from the older villages.
• The Line System proved impossible to enforce properly and became a highly controversial issue, leading to tension and later to the Assam Movement in independent India.

The colonial economy thus produced a strange double effect: on one side it created modern tea towns, railways and new wealth for the British; on the other side it destroyed many traditional industries (such as the famous Assamese silk and handloom products), took away the forests of the villagers, and created the social problems of land, immigration and labour that still haunt the state.

Key points to remember:

• Robert Bruce discovered wild tea plants in Assam in 1823.
• The Assam Tea Company was formed in 1839; Assam tea first reached London in 1838.
• Tea labourers were brought from outside Assam; their descendants are the tea tribes.
• The first oil well of Asia was drilled at Digboi; the Digboi refinery (1901) was Asia's first.
• The first railway in Assam ran from Dibrugarh to Margherita (1881–82).
• British encouraged immigration from East Bengal into Assam's wastelands.
• The Line System was introduced to regulate the settlement of immigrants.
• The colonial economy weakened traditional Assamese industries like silk and handlooms.

The people of Assam joined the national struggle for freedom from the very beginning of the Indian National Congress (founded in 1885). The first organised political body of the province was the Assam Association, formed in 1903, which raised the problems of the Assamese people before the government; leaders such as Manik Chandra Barua played an early part in it.

Important phases of Assam's participation:

1. Anti-Partition and Swadeshi Movement (1905–1911): When the British joined Assam with Eastern Bengal in 1905, the people of Assam rose in protest. They boycotted British goods, promoted swadeshi (indigenous) products, and demanded the annulment of the partition. This movement first brought modern nationalism to Assam.

2. Non-Cooperation Movement (1920–22): Led nationally by Mahatma Gandhi, this movement drew in Assam strongly. Lawyers gave up their practice, students left government schools, and leaders like Gopinath Bordoloi, Tarun Ram Phukan and others toured the province. The Indian National Congress held its session at Gauhati in 1926 under the presidentship of S. Srinivasa Iyengar.

3. Peasant agitations: Long before the Congress movements, the peasants of Assam had fought against oppressive British revenue. The first armed peasant revolt of Assam under the British was the Phulaguri uprising (1861), and the most famous was the Patharughat peasants' meeting of 1894, where the ryots were fired upon by the police while peacefully demanding a reduction of land revenue.

4. Civil Disobedience Movement (1930): Assam participated in the salt satyagraha and other programmes of civil disobedience.

5. Quit India Movement (1942): The people of Assam responded with remarkable courage to the 'Quit India' call of 1942. The movement was so strong that the British had to use aeroplanes to machine-gun the crowds in places like Dhekiajuli. Many martyrs gave their lives, including Kushal Konwar (from Golaghat), who was hanged by the British — the only martyr of the 1942 movement to be executed — and the brave girls Kanaklata Barua (shot while marching with the national flag at Gohpur) and Tileswari Barua (killed at Dhekiajuli).

6. Politics of the 1930s–40s: Under the Government of India Act 1935, the first general election was held in 1937. The Congress under Gopinath Bordoloi formed the ministry in 1937. Bordoloi, later called Lokapriya ('beloved of the people'), served the province with great integrity. During the Second World War the Muslim League ministry of Sir Muhammad Saadulla cooperated with the British. In the 1946 elections the Congress again won, and Bordoloi formed the last pre-independence ministry.

When India was partitioned in 1947, there were proposals and pressures to detach parts of Assam to Pakistan. Gopinath Bordoloi and his colleagues firmly resisted these plans and ensured that Assam remained an integral part of India.

Key points to remember:

• The Assam Association was formed in 1903; Manik Chandra Barua was an early leader.
• The Swadeshi movement arose from the 1905 partition of Bengal.
• The Congress session at Gauhati was held in 1926 (president: S. Srinivasa Iyengar).
• Phulaguri uprising (1861) was the first armed peasant revolt; Patharughat peasants were fired upon in 1894.
• Gopinath Bordoloi led the Congress ministries of 1937 and 1946; he is called Lokapriya.
• Quit India Movement (1942): martyrs included Kushal Konwar (hanged), Kanaklata Barua and Tileswari Barua.
• Bordoloi's resistance kept Assam within India at the time of Partition (1947).
• Bishnu Prasad Rabha, Ambikagiri Roy Choudhury and Tarun Ram Phukan were other noted patriots.

After independence, the large-scale influx of people from across the border into Assam created deep anxiety among the people of the state. This problem finally gave rise to one of the biggest mass movements of post-independence India — the Assam Movement (1979–1985).

The background: After the Partition of 1947 and especially after the creation of Bangladesh in 1971, lakhs of people entered Assam from East Bengal / East Pakistan / Bangladesh. The fear of becoming a minority in their own homeland made the Assamese people demand that the illegal foreigners be detected and expelled.

The beginning: In 1979, when the electoral rolls of the Mangaldoi constituency were being updated, a very large number of names of doubtful citizens (foreigners) were found. The All Assam Students' Union (AASU) and the All Assam Gana Sangram Parishad (AAGSP) launched a movement demanding that foreigners who had entered Assam after a fixed date be identified and deported.

The movement: The Assam Movement went on from 1979 to 1985. It was a peaceful but extremely powerful movement. The people organised bandhs, gheraos, civil disobedience, blockades of oil supply and transport, and even boycotts of elections. The students and the common people showed extraordinary unity and sacrifice, and thousands of them were killed by police firing and violence.

Tragic events: The movement had tragic sides as well. In 1983, at the time of the elections, a terrible massacre took place at Nellie in the Nagaon district, in which a very large number of people, mostly women and children, were killed. Such incidents deeply disturbed the whole nation.

The Assam Accord: After long negotiations between the government of India and the leaders of AASU-AAGSP, the Assam Accord was signed on 15 August 1985 in New Delhi. Under the Accord, it was agreed that foreigners who had entered Assam after the midnight of 24–25 March 1971 would be detected and deported, while those who had come earlier (between 1961 and 1971) would be regularised as citizens in stages. The Accord also promised safeguards for the culture, language and identity of the Assamese people and steps for the economic development of the state.

Aftermath: After the Accord, elections were held in December 1985, and the newly formed political party Asom Gana Parishad (AGP), led by former AASU leaders such as Prafulla Kumar Mahanta, came to power in the state. The question of updating the National Register of Citizens (NRC) and the working of the Foreigners Tribunals, as promised in the Accord, continued to be an important issue in Assam's politics in the following decades.

Key points to remember:

• The Assam Movement lasted from 1979 to 1985.
• It was launched by AASU and AAGSP.
• The movement began over the update of electoral rolls in the Mangaldoi constituency (1979).
• The movement demanded detection and deportation of illegal foreigners.
• The Nellie massacre took place in 1983 in Nagaon district.
• The Assam Accord was signed on 15 August 1985.
• Under the Accord the cut-off date for deportation was fixed as 25 March 1971.
• The AGP (Asom Gana Parishad) was formed after the Accord and won the 1985 elections.
• Prafulla Kumar Mahanta became Chief Minister after the Accord.

When India became independent in 1947, Assam became a state with Gopinath Bordoloi as its first Chief Minister. After his death in 1950, Bishnuram Medhi became the Chief Minister. Assam then included the whole of the present north-east except the princely states of Manipur and Tripura and the area of present-day Nagaland (then the Naga Hills).

The greatest political change after independence was the repeated redrawing of Assam's boundaries, as one new state after another was carved out of it:

• 1947: The district of Sylhet was detached from Assam and went to East Pakistan (now Bangladesh) under the Partition.
• 1951: The North-East Frontier Tract (later called NEFA, now Arunachal Pradesh) was placed under a separate administration.
• 1963: Nagaland became a separate state, carved out of the Naga Hills district of Assam.
• 1972: This was the year of the great reorganisation — Meghalaya was formed out of the Khasi, Jaintia and Garo hills; Manipur and Tripura became full-fledged states; Mizoram (formerly the Mizo Hills of Assam) and Arunachal Pradesh (NEFA) became Union Territories. After losing Shillong, Assam's capital was shifted to Dispur (Guwahati). Later Mizoram (1987) and Arunachal Pradesh (1987) also became full states. These seven states of the region — Assam, Nagaland, Meghalaya, Manipur, Tripura, Mizoram and Arunachal Pradesh — are popularly called the 'Seven Sisters'.

Language and identity: The Assam Official Language Act, 1960, made Assamese the official language of the state. This decision caused resentment, especially in the Bengali-speaking Barak valley (Silchar), where a movement demanded the protection of Bengali. In 1961, during protests at Silchar, police firing killed several people; the agitation led to a special constitutional protection for the Bengali language in the Barak valley. The hill regions were dissatisfied for similar reasons, which was one of the causes of the reorganisation of 1972.

Insurgency and peace accords: From the late 1970s the state faced violent insurgency, beginning with the United Liberation Front of Asom (ULFA), formed in 1979, and various other armed groups. Along with the Assam Accord of 1985, several peace agreements have been signed in recent decades. Under the Bodo Accord of 2020 the Bodoland Territorial Region was created; agreements were also reached with Karbi groups, and in December 2023 a tripartite accord was signed with the pro-talks faction of ULFA. Insurgency has greatly declined but the wounds of the past remain.

Citizenship debates: The issue of updating the National Register of Citizens (NRC) and the Citizenship (Amendment) Act, 2019, generated intense debate and protests in Assam, as the people remain deeply concerned about protecting the identity and resources of the state.

Economy and society today: Assam today is a major producer of tea, oil and natural gas in India. The discovery of oil at Digboi made Assam the first oil-producing region of the country. Floods of the Brahmaputra, erosion and migration remain big challenges, while the state has made steady progress in education, transport (railways, roads, the Saraighat and Bogibeel bridges, and the Brahmaputra river ports) and cultural fields.

Key points to remember:

• Gopinath Bordoloi was the first Chief Minister of Assam; Bishnuram Medhi succeeded him.
• Sylhet went to East Pakistan in 1947 under the Partition.
• Nagaland was carved out of Assam in 1963.
• Meghalaya, Manipur, Tripura, Mizoram and Arunachal Pradesh were reorganised in 1972.
• Assam's capital shifted from Shillong to Dispur in 1972.
• The Assam Official Language Act was passed in 1960.
• ULFA was formed in 1979; peace accords followed in later decades.
• The Bodoland Territorial Region was created under the Bodo Accord (2020).
• Digboi made Assam the first oil-producing region of India.

Assam's history lives on in its rich and living culture. No study of the state is complete without its festivals, arts and heritage.

The most famous festival of Assam is Bihu, which is actually a set of three festivals of the agricultural year:

• Rongali or Bohag Bihu is celebrated in mid-April (the month of Bohag) to welcome the Assamese New Year and the spring. It is the most joyful Bihu, celebrated with the famous Bihu dance, husori songs and young people's merrymaking.
• Kati or Kongali Bihu comes in autumn (mid-October), a quieter festival of the paddy fields when lamps are lit in the fields.
• Bhogali or Magh Bihu is celebrated in mid-January (the month of Magh) after the harvest, with community feasts and the building of the meji (bonfire) and bhelaghar.

The Gamosa (the traditional woven cloth with red borders) is the symbol of Assamese identity, used to honour guests and offered to the gods. The Xorai (bell-metal vessel) and the Japi (bamboo hat) are other famous symbols; the Japi is so loved that a design of it is printed on stamps.

Other festivals and observances: The Ambubachi Mela, held in June at the Kamakhya temple in Guwahati, draws lakhs of pilgrims; Me-dam-me-phi (31 January) is the ancestor-worship festival of the Ahoms; Ali-ai-ligang is the spring festival of the Mising tribe; the Karbis and Dimasas observe Rongker and Chomangkan; and the Rabhas celebrate Baikho. Each community of Assam has its own rich festival.

Dance and music: The Sattriya dance, born in the sattras of Sankardeva, is recognised as one of the eight classical dance forms of India. Bihu dance, the elegant Jhumur of the tea-garden community and the Deodhani dance are also famous. Assamese music includes the borgeets of Sankardeva-Madhavdeva and the immortal songs of Dr Bhupen Hazarika, the 'Bard of the Brahmaputra'. Jyoti Prasad Agarwala made the first Assamese film, Joymoti, in 1935.

Handloom and handicrafts: Assam is world famous for its silk — the golden Muga (found only in Assam), Pat and Eri silk — woven into the Mekhela-chador worn by Assamese women. Cane and bamboo crafts, pottery, the paper-mask art of the Majuli sattras (Samaguri), terracotta, jewellery and the painted manuscripts of the medieval period all form part of Assam's craft heritage.

Literature: Medieval Assamese literature begins with the Saptakanda Ramayana of Madhava Kandali (written in the Assamese language under the patronage of the king Mahamanikya). The borgeets, kirtans, ankiya nats and buranjis enriched it further. Modern Assamese literature began with the magazine Jonaki (1889) and its founder-editor Lakshminath Bezbaroa, and later flowered through writers like Birendra Kumar Bhattacharya (winner of the Jnanpith award), Mamoni Raisom Goswami and many others.

Historic sites and monuments: Assam is dotted with monuments of its long history: the Kamakhya temple and Umananda temple on the Brahmaputra; the Ahom monuments of Sivasagar — the Rang Ghar (believed to be one of the oldest surviving amphitheatres in Asia), the Talatal Ghar, the Kareng Ghar of Gargaon, and the huge Sivasagar tanks and temples; and the Charaideo Moidams, the royal burial mounds of the Ahom kings, which were inscribed as a UNESCO World Heritage Site in 2024. Hajo (with its Hayagriva-Madhava temple and the Poa Mecca), the ancient remains of Surya Pahar, and the river-island of Majuli — the world's largest river island and the heart of sattra culture (made a district in 2016) — complete this heritage.

Key points to remember:

• Bihu has three forms: Bohag/Rongali (April), Kati/Kongali (October), Magh/Bhogali (January).
• The Gamosa, Xorai and Japi are famous symbols of Assam.
• Sattriya is one of the eight classical dance forms of India.
• Ambubachi Mela is held at the Kamakhya temple in June.
• Me-dam-me-phi is the Ahom festival of ancestor worship (31 January).
• Joymoti (1935) by Jyoti Prasad Agarwala was the first Assamese film.
• Muga silk is found only in Assam.
• The Saptakanda Ramayana was written by Madhava Kandali.
• Modern Assamese literature began with Jonaki (1889) and Lakshminath Bezbaroa.
• Charaideo Moidams were declared a UNESCO World Heritage Site in 2024.
• Majuli is the world's largest river island and a centre of sattra culture.