Cross-State Timeline

Prehistoric – Vedic era

Himachal Pradesh

Munda-speaking Kolarian tribes are the earliest recorded inhabitants of the lower Himalayan hills; Vedic hymns describe indigenous "Dasas" resisting Aryan incursion, later renamed Khasas and Kinnaras in post-Vedic texts — names that survive…

c. 30,000 BCE – 6th century BCE· ~30,000 BCE

Madhya Pradesh

The Bhimbetka rock shelters (Raisen district) preserve cave paintings dating back as far as 30,000 BCE, while Middle Pleistocene hominid remains at Hathnora in the Narmada Valley point to some of the subcontinent's earliest human habitation…

c. 6000 BCE onward· ~6,000 BCE

Uttar Pradesh

Neolithic farming settlements appear across the Gangetic plain; Middle/Upper Palaeolithic artifacts in the region are dated to 21,000-31,000 years old, among the oldest evidence of human habitation in South Asia.

c. 3000–1500 BCE· ~3,000 BCE

Rajasthan

Kalibangan (Hanumangarh district, on the now-dry Ghaggar river) flourishes as a major Indus Valley/Harappan provincial centre, with both pre-Harappan and Harappan layers; famous for its fire altars and what excavators describe as the world'…

c. 2000 BC· ~2,000 BCE

Manipur

Neolithic settlement of the Imphal Valley; Paleolithic/Mesolithic tools found at Khangkhui Caves near Ukhrul point to still-earlier hill habitation.

c. 1500-600 BCE· ~1,500 BCE

Uttar Pradesh

The later-Vedic "Madhya Desh" takes shape here — home to the Kuru, Panchala, Kashi and Kosala peoples, and the Painted Grey Ware culture that marks South Asia's transition into the Iron Age.

c. 700 BCE· ~700 BCE

Assam

Daojali Hading (Dima Hasao district), excavated by Gauhati University in 1962-63, yields Neolithic tools and cord-marked pottery over 2,700 years old — the first evidence in India of an "Eastern Asiatic Neolithic complex," alongside early i…

c. 528 BCE· ~528 BCE

Uttar Pradesh

The Buddha delivers his first sermon at Sarnath, near Varanasi — the "Turning of the Wheel of Dharma" — and dies at Kushinagar around 483 BCE, making both towns among Buddhism's four holiest pilgrimage sites.

6th century BCE· ~500 BCE

Uttar Pradesh

Eight of the sixteen great Mahajanapadas of the Buddha's lifetime — Kosala, Kashi, Kuru, Panchala, Shurasena (Mathura), Vatsa (Prayagraj), Malla (Kushinagar) and Chedi (Bundelkhand) — lie within modern UP's borders.

c. 400 BCE – 1200s CE· ~400 BCE

Delhi

Tradition identifies Delhi with Indraprastha, capital of the Pandavas in the Mahabharata, conventionally sited at Purana Qila. Archaeological finds — Ochre Coloured Pottery near the Red Fort (c. 2000 BCE) and Painted Grey Ware (c. 1200 BCE)…

322–185 BCE· ~322 BCE

Rajasthan

The region comes under Mauryan control; later, the Gupta Empire (320-550 CE) leaves its largest cache of surviving coins at Bayana, Rajasthan, before Huna invasions end Gupta dominance by around 485 CE.

4th century BCE – 3rd century CE· ~300 BCE

Madhya Pradesh

Chandragupta Maurya absorbed the region in the 320s BCE. His grandson Ashoka — whose wife hailed from nearby Vidisha — commissioned the Great Stupa at Sanchi in the 3rd century BCE, now a UNESCO World Heritage Site and one of the oldest sur…

c. 230 BCE – 225 CE· ~230 BCE

Maharashtra

The Satavahana dynasty rules the Deccan from Pratishthana (Paithan), the region's earliest well- documented major power.

c. 2nd century BCE – 3rd century CE· ~100 BCE

Himachal Pradesh

Small Himalayan tribal republics flourish — Trigarta (Kangra), Kuluta (Kullu), Kulinda (Shimla hills) — some resisting, some aiding, Chandragupta Maurya's campaigns; Ashoka sends Buddhist missionaries into the Kullu valley.

3rd c. BCE – 3rd c. CE· ~3 BCE

Kerala

The early Chera dynasty, one of the three great Sangam-age "crowned" kingdoms alongside the Cholas and Pandyas, rules the Malabar coast; Ashoka's edicts name the Cheras ("Keralaputra") as neighbouring rulers.

1st–2nd c. CE· ~1 CE

Kerala

The port of Muziris, near modern Kodungallur, becomes "the first emporium of India" per Pliny the Elder; the 2nd-century Muziris Papyrus records a massive Roman pepper shipment, evidence of intense Indo-Roman trade.

14th–15th c.· ~14 CE

Kerala

The Zamorin (Samoothiri) of Calicut rises as the Malabar coast's dominant maritime power, controlling the pepper trade from Kozhikode.

14 Apr – 3 May 2023· ~14 CE

Manipur

A Manipur High Court order appearing to recommend Scheduled Tribe status for the Meitei community triggers a Tribal Solidarity March; violence erupts on 3 May 2023 between Meitei and Kuki-Zo communities.

33 AD· ~33 CE

Manipur

Nongda Lairen Pakhangba founds the Ningthouja dynasty at Kangla, defeating the rival Khaba group and beginning the unification of the valley's clans into the kingdom of Kangleipak.

c. 70 CE onward· ~70 CE

Kerala

Jewish traders settle at Muziris, founding India's oldest Jewish diaspora community; tradition holds St. Thomas the Apostle landed at Kodungallur in 52 CE, founding Christianity on the Malabar coast.

250–525 CE· ~250 CE

Maharashtra

The Vakataka dynasty governs the Vidarbha region from Nandivardhana and Vatsagulma, patronising the Ajanta Caves.

4th – 6th century CE· ~300 CE

Madhya Pradesh

The Gupta Empire, India's classical age, controlled the region until Hephthalite (White Hun) invasions triggered its collapse. In 528 CE, King Yasodharman of Malwa defeated the Huns — a victory woven into the legendary "Vikramaditya" title…

4th-5th century CE· ~300 CE

Uttar Pradesh

Under the Mauryas and then the Gupta Golden Age, the plain around Prayag (Prayagraj) becomes a center of imperial power — dense Gupta-era inscriptions and coinage finds mark it as a political core, not merely a religious one.

c. 350–650 CE· ~350 CE

Assam

The Varman dynasty , founded by Pushyavarman, rules the ancient Kamarupa kingdom from Pragjyotishpura near modern Guwahati; king Bhaskaravarman's alliance with Emperor Harshavardhana marks Kamarupa's political high point.

543–753 CE· ~543 CE

Maharashtra

The (Western) Chalukyas control the region, followed by the Rashtrakuta Dynasty (753–982 CE) from Manyakheta.

c. 550 CE· ~550 CE

Himachal Pradesh

Raja Maru (Meru Varman) traditionally founds the Chamba princely state at Brahmaur — one of the longest-lived of the hill kingdoms, surviving in some form until 1948.

606-647 CE· ~606 CE

Uttar Pradesh

Harshavardhana rules a North Indian empire from his capital at Kannauj, stretching from Punjab and Gujarat to Bengal and Odisha — Kannauj's brief age as an imperial capital to rival Pataliputra.

629 CE (traditional)· ~629 CE

Kerala

The Cheraman Juma Masjid is traditionally dated to this year, following the legendary conversion of King Cheraman Perumal — among the earliest mosques associated with the subcontinent.

9th – 14th century· ~800 CE

Madhya Pradesh

The Paramara dynasty ruled Malwa from the 9th century; King Bhoja (Raja Bhoj, r. c. 1010-1060) — celebrated scholar-king — is traditionally credited with founding Bhopal. The last Paramara king fell to Alauddin Khalji's forces in 1305. In B…

1009, 1360, 1540 CE· ~1009 CE

Himachal Pradesh

Kangra Fort, seat of the Katoch dynasty, is sacked three times across five centuries — by Mahmud Ghazni, Firuz Shah Tughluq, and Sher Shah Suri — yet the Katoch line endures, often cited as one of the oldest surviving royal lineages on Eart…

1028–1459· ~1028 CE

Rajasthan

Rajput clan-kingdoms rise across the region: the Kachhwaha dynasty founds Amber (1028), the Rathore dynasty founds Marwar (1226, capital moved to newly built Jodhpur in 1459), and the Sisodia dynasty founds Mewar (1326, capital Chittorgarh)…

1052· ~1052 CE

Delhi

Tomar Rajput king Anangpal Tomar founds Lal Kot. It is conquered in 1180 by the Chahamana (Chauhan) rulers of Ajmer and renamed Qila Rai Pithora.

1074–1112· ~1074 CE

Manipur

Reign of King Loiyumba; in 1110 he formalises the Loiyumba Shinyen, an early written constitution consolidating Ningthouja rule over Kangleipak.

1187–1317· ~1187 CE

Maharashtra

The Yadava (Seuna) Dynasty rules from Devagiri (Daulatabad); Marathi becomes the court language, and in 1290 the saint-poet Dnyaneshwar composes the .

1192 – 1526· ~1192 CE

Delhi

Qutb-ud-din Aibak founds the Slave (Mamluk) dynasty in 1206 and begins the Qutub Minar — at 72.5 metres, still the world's tallest brick minaret. The Khalji dynasty builds Siri (early 1300s); the Tughlaqs build Tughlaqabad (c. 1321), Jahanp…

1206 CE· ~1206 CE

Uttar Pradesh

Qutb-ud-din Aibak, having already taken Varanasi and Kannauj, establishes the Delhi Sultanate — beginning over three centuries of Sultanate rule across the Gangetic plain.

1228· ~1228 CE

Assam

Sukaphaa , a Tai/Shan prince from Mong Mao, crosses the Patkai hills with roughly 9,000 followers and founds the Ahom kingdom in the Brahmaputra Valley — the start of a dynasty that will rule for nearly 600 years, introducing wet-rice culti…

14th – 16th century· ~1300 CE

Madhya Pradesh

Gond dynasties rose across the Gondwana/Mahakoshal belt, notably Garha-Mandla and Deogarh, while the Baghel (Vaghela) dynasty founded the Rewa/Baghelkhand kingdom in 1236. After the Delhi Sultanate's grip loosened, the independent Malwa Sul…

1303, 1535, 1568· ~1303 CE

Rajasthan

Three separate jauhars (mass self-immolation by women and children to avoid capture) take place at Chittorgarh during sieges by Alauddin Khalji, Bahadur Shah of Gujarat, and Akbar respectively — among the most mythologised events in Rajput…

1327· ~1327 CE

Maharashtra

Muhammad bin Tughluq of the Delhi Sultanate shifts his capital to Daulatabad, briefly making it the seat of an empire spanning much of India.

1347–1636· ~1347 CE

Maharashtra

The Bahmani Sultanate, then the Ahmadnagar Sultanate, rule the Deccan until Mughal absorption.

20 May 1498· ~1498 CE

Kerala

Vasco da Gama lands at Kappad, near Kozhikode — the first direct European sea route to India, received with strained diplomacy by the Zamorin.

1503–1663· ~1503 CE

Kerala

Portuguese Cochin is established (Fort Manuel, 1503); the Dutch capture Cochin in 1663 following their conquest of Malabar (1658-63), beginning Dutch Malabar.

1526 – 1857· ~1526 CE

Delhi

Early Mughal emperors rule chiefly from Agra; Humayun begins Purana Qila (Dinpanah), completed by rival ruler Sher Shah Suri. Shah Jahan restores Delhi's primacy, commissioning chief architect Ustad Ahmad Lahori to build the walled city of…

1526-1585 CE· ~1526 CE

Uttar Pradesh

Babur founds the Mughal Empire; Agra becomes the imperial capital under Akbar, Jahangir and Shah Jahan, and Akbar builds an entirely new planned capital at Fatehpur Sikri (1571-73) — abandoned within fifteen years for want of water, but pre…

1556 – 1707· ~1556 CE

Madhya Pradesh

Akbar brought most of the region under Mughal control after 1556, though Gond kings retained local autonomy as tributaries. Gwalior flourished as a center of Hindustani classical music — birthplace of legendary musicians Tansen and Baiju Ba…

1562–1570· ~1562 CE

Rajasthan

Raja Bharmal of Amber becomes the first Rajput ruler to ally with Akbar; his descendant Raja Man Singh I rises to Mughal command of campaigns from Afghanistan to Bengal. By 1570, Jodhpur, Bikaner and Jaisalmer accept Mughal suzerainty; Mewa…

18 June 1576· ~1576 CE

Rajasthan

The Battle of Haldighati : Maharana Pratap of Mewar, leading roughly 4,000 cavalry and 3,000 Bhil tribesmen, faces a 28,000-strong Mughal force under Raja Man Singh I. A tactical Mughal win, but Pratap escapes and Mewar is never fully annex…

1597–1652· ~1597 CE

Manipur

Reign of King Khagemba; the kingdom reaches its greatest territorial extent and Kangla fort is substantially expanded.

18 Jun 1671· ~1671 CE

Assam

The Battle of Saraighat : Ahom general Lachit Borphukan defeats a much larger Mughal fleet on the Brahmaputra using small, maneuverable boats — the Mughals' last serious attempt to conquer Assam, and still the defining episode of Ahom milit…

6 June 1674· ~1674 CE

Maharashtra

Shivaji's Rajyabhishek (coronation) at Raigad Fort, before over 50,000 people, establishes him as the first Chhatrapati of the Maratha Empire.

18th century· ~1700 CE

Maharashtra

The Peshwa era: Pune-based Peshwas become the de facto rulers of the Maratha Confederacy, extending Maratha power across much of the Indian subcontinent.

18th century· ~1700 CE

Rajasthan

Rajput states, initially inviting Maratha chiefs as mediators in succession disputes, are gradually reduced to paying Maratha tribute (chauth); by the century's end, continuous Maratha exactions leave the Rajput states financially and milit…

1707–1765· ~1707 CE

Assam

Sivasagar (then Rangpur) becomes the Ahom capital under Rudra Singha; the Rang Ghar royal pavilion (1746) and seven-storey Talatal Ghar palace-fortress (1765) are built, among the largest surviving Tai-Ahom monuments.

1709–1748· ~1709 CE

Manipur

Reign of Pamheiba (Gharib Nawaz), who adopts Ramanandi Vaishnavism, makes Hinduism the state religion, and renames the kingdom "Manipur." Around 1729, the Puya Meithaba episode sees Sanamahi religious manuscripts burned at Kangla — a still-…

1720 – 1818· ~1720 CE

Madhya Pradesh

Maratha power filled the vacuum: the Holkars ruled from Indore, the Scindias from Gwalior, and the Bhonsles from Nagpur, while smaller Maratha houses took Dewas and Dhar. Bhopal State, founded by Afghan general Dost Mohammed Khan, followed…

1724-1775 CE· ~1724 CE

Uttar Pradesh

The Nawabs of Awadh build an independent kingdom from Faizabad and then Lucknow, ushering in a golden age of Indo-Islamic art, architecture, Urdu poetry and Awadhi cuisine that still defines Lucknow's identity.

1769–1805· ~1769 CE

Assam

The Moamoria Rebellion , a revolt against Ahom royal authority, devastates the kingdom — roughly half the population is estimated to have died amid famine and conflict, fatally weakening the Ahoms just before the Burmese invasions.

1792–1814· ~1792 CE

Kerala

Malabar is annexed by the British after the Third Anglo-Mysore War (1792), administered directly under Madras Presidency; the Dutch formally cede Cochin to the British in 1814, though Travancore and Cochin remain British-protected princely…

1804–1809· ~1804 CE

Himachal Pradesh

Ranjit Singh's Sikh Empire crushes Katoch power at Kangra (1804); Gorkha general Amar Singh Thapa defeats the Katochs in turn (1806); a Sikh-Katoch alliance finally expels the Gorkhas from Kangra (1809).

1814–1816· ~1814 CE

Himachal Pradesh

The Anglo-Gorkha War is fought partly on Himachali soil (Nahan, Subathu, Malaun, Kangra); most hill rulers back the British. The Treaty of Sugauli (1816) ends the war and brings the hill states south of the Sutlej under British paramountcy…

1817–1826· ~1817 CE

Assam

Three Burmese invasions devastate Assam and install a puppet Ahom king; Burmese expansion toward Bengal triggers the First Anglo-Burmese War, ending in the Treaty of Yandabo (24 February 1826) , under which Burma cedes Assam to the British…

1817· ~1817 CE

Kerala

A Travancore royal decree mandates education for all, including women and lower castes — the founding act of what became Kerala's "Kerala Model" of human-development-led growth.

1817–1818· ~1817 CE

Maharashtra

The Third Anglo-Maratha War: a British East India Company force of over 110,000 troops decisively ends Maratha power; the Peshwa's territories are absorbed into the Bombay Presidency.

1817–1832· ~1817 CE

Rajasthan

Subsidiary-alliance treaties bring nearly all Rajput states under British paramountcy; the British establish the Rajputana Agency in 1832, headquartered at Mount Abu, overseeing 19 princely states, 3 chiefships and the British-administered…

1818–1947· ~1818 CE

Maharashtra

The Bombay Presidency governs the region under British colonial administration, with Bombay city developing into a major trading and industrial port.

1823–1841· ~1823 CE

Assam

British officer Robert Bruce is shown indigenous wild tea plants by Singpho chief Bessa Gam; experimental cultivation begins at Chabua in 1835, and the first Indian tea auction is held in March 1841 — the origin of what is now the world's l…

1856-1858 CE· ~1856 CE

Uttar Pradesh

The British annexation of Awadh (1856) helps trigger the 1857 Revolt, which erupts at Meerut on 10 May 1857 and spreads through Kanpur, Lucknow and Jhansi — where Rani Lakshmibai leads the resistance before her death in June 1858. Kanpur an…

1857· ~1857 CE

Delhi

Sepoys seize Delhi and proclaim the aged Bahadur Shah Zafar II Emperor of India. The British recapture the city after a siege, exile Zafar to Rangoon, and end the Mughal dynasty — beginning direct Crown rule.

1857· ~1857 CE

Madhya Pradesh

Rebellion swept northern MP, led locally by figures including Tatya Tope and Rani Avantibai Lodhi. In Baghelkhand, Thakur Ranmat Singh Baghel led armed resistance before joining the Rani of Jhansi at the Battle of Kalpi in 1858; he was capt…

1861 – 1947· ~1861 CE

Madhya Pradesh

After the Third Anglo-Maratha War, the British merged Nagpur Province with the Saugor and Nerbudda Territories to form the Central Provinces in 1861, while northern princely states were administered under the Central India Agency. Colonial-…

1864· ~1864 CE

Himachal Pradesh

Shimla is declared the summer capital of British India — built in large part with timber, labour and revenue supplied by the same small hill kingdoms that would one day be absorbed into Himachal Pradesh.

31 Mar–27 Apr 1891· ~1891 CE

Manipur

The Anglo-Manipur War: the Manipuri army under Paona Brajabashi is defeated at the decisive Battle of Khongjom; the kingdom is subdued but not formally annexed.

1891–1907· ~1891 CE

Manipur

Five-year-old Churachand is installed as Raja under direct British administration; he gains full ruling powers only in 1907, always subordinate to a British Political Agent — Manipur is now a princely state under paramountcy.

11 Dec 1901· ~1901 CE

Assam

The Digboi Refinery is commissioned by the Assam Oil Company, following an 1889 discovery during railway construction — Asia's first oil refinery , still operating today.

1902-1937· ~1902 CE

Uttar Pradesh

The North-Western Provinces and Oudh are merged into the United Provinces of Agra and Oudh (1902), shortened to "United Provinces" under the Government of India Act, 1935.

1911 – 1931· ~1911 CE

Delhi

At the Delhi Durbar of 12 December 1911, King George V announces the transfer of India's capital from Calcutta to Delhi. Architects Edwin Lutyens and Herbert Baker design a new capital on Raisina Hill; New Delhi is formally inaugurated on 1…

1921· ~1921 CE

Himachal Pradesh

The Punjab States Agency is created at Shimla, formally administering the Punjab Hill States (and other Punjab princely states) under the Governor-General's direct authority.

12 Nov 1936· ~1936 CE

Kerala

The Travancore Temple Entry Proclamation, issued by Maharaja Chithira Thirunal Balarama Varma, opens state temples to all Hindus regardless of caste; Gandhi called it "the great wonder of modern times." Cochin issues its own proclamation on…

8 Mar–18 Jul 1944· ~1944 CE

Manipur

The Battle of Imphal, fought alongside the Battle of Kohima, decisively halts and reverses the Japanese U-Go offensive — one of the pivotal Allied victories of the Burma campaign, with roughly 54,900 Japanese and 12,600 Allied casualties.

1946–1960· ~1946 CE

Maharashtra

The Samyukta Maharashtra Movement, led by the Samyukta Maharashtra Samiti under S.A. Dange, agitates for a unified Marathi-speaking state against a proposed bilingual Bombay State; 106 people die in the agitation.

1947 – Present· ~1947 CE

Delhi

New Delhi becomes the seat of independent India's government in 1947. Partition brings roughly 500,000 Hindu and Sikh refugees into the city (mostly from West Punjab) while about 300,000 Muslims leave for Pakistan, permanently reshaping Del…

1947· ~1947 CE

Himachal Pradesh

At Independence, the princely state of Suket simply surrenders to a crowd of peaceful pro- democracy demonstrators — one of the quietest ends to feudal rule anywhere in India.

15 Aug 1947· ~1947 CE

Manipur

British paramountcy lapses; Manipur briefly holds independent status under its own 1947 State Constitution Act and elected assembly, even as Maharaja Bodhachandra Singh had already signed an Instrument of Accession to India.

15 April 1948· ~1948 CE

Himachal Pradesh

Himachal Pradesh is formally created as a Chief Commissioner's Province, integrating roughly 30 princely hill states into just 4 initial districts (Chamba, Mahasu, Mandi, Sirmaur).

18 Mar 1948 – 1 Nov 1956· ~1948 CE

Rajasthan

Rajasthan is integrated in seven stages: the Matsya Union (Alwar, Bharatpur, Dholpur, Karauli, Mar 1948) merges into Greater Rajasthan (Bikaner, Jaisalmer, Jaipur, Jodhpur join, 30 Mar 1949 — celebrated as Rajasthan Day ), then United Rajas…

1 Jul 1949· ~1949 CE

Kerala

Travancore and Cochin merge into Travancore-Cochin.

21 Sep 1949· ~1949 CE

Manipur

The Maharaja is compelled to sign the Manipur Merger Agreement at Shillong without his elected legislature's consent; it takes effect 15 October 1949, dissolving Manipur's constitution and assembly — a coercive process still cited as the ro…

26 January 1950· ~1950 CE

Himachal Pradesh

Under India's new Constitution, HP becomes a Part C State administered by a Lieutenant Governor.

1950–1963· ~1950 CE

Manipur

Manipur is demoted to a centrally administered Part C state (1950), redesignated a Union Territory (1956), and regains a Legislative Assembly and Council of Ministers only in 1963.

24 January 1950· ~1950 CE

Uttar Pradesh

With India's new Constitution days from taking effect, the United Provinces — having absorbed the former princely states of Rampur, Benares and Tehri Garhwal — is renamed Uttar Pradesh.

1 July 1954· ~1954 CE

Himachal Pradesh

The separate Part C state of Bilaspur is merged into Himachal Pradesh as a new district.

1 November 1956· ~1956 CE

Himachal Pradesh

The States Reorganisation Act abolishes the Part C category; HP becomes a Union Territory.

1 Nov 1956· ~1956 CE

Kerala

The State of Kerala is formed under the States Reorganisation Act, unifying Travancore-Cochin with the Malabar district of Madras State on Malayalam-linguistic lines. Kerala initially has 5 districts, growing to 14 by 1984 (Kasaragod, the l…

1 November 1956· ~1956 CE

Madhya Pradesh

Under the States Reorganisation Act, Madhya Bharat, Vindhya Pradesh, and Bhopal State merged into a new, enlarged Madhya Pradesh, while the Marathi-speaking Vidarbha region (including Nagpur) was ceded to Bombay State. Jabalpur was original…

14 Oct 1956· ~1956 CE

Maharashtra

Dr. B.R. Ambedkar leads a mass conversion of roughly 400,000–800,000 followers to Navayana Buddhism at Deekshabhoomi, Nagpur — the event underlying Maharashtra's status as home to **India's largest Buddhist population**.

5 Apr 1957· ~1957 CE

Kerala

E.M.S. Namboodiripad forms a government after the Communist Party of India wins the first Kerala Assembly election — the world's first democratically elected Communist government; it is dismissed under Article 356 on 31 July 1959.

2 Oct 1959· ~1959 CE

Rajasthan

India's Panchayati Raj system of local self-government is launched at Bagdari village, Nagaur district, personally inaugurated by Prime Minister Jawaharlal Nehru — Rajasthan becomes the pioneering state for a model later adopted nationwide.

1 May 1960· ~1960 CE

Maharashtra

Bombay State is bifurcated: the State of Maharashtra (Marathi-speaking regions, capital Mumbai) is formed simultaneously with the State of Gujarat — commemorated annually as Maharashtra Din.

1963–1987· ~1963 CE

Assam

Undivided Assam is progressively broken up: Nagaland becomes a state in 1963, Meghalaya is carved out in 1972, and both Mizoram and Arunachal Pradesh attain statehood in 1987 — together accounting for most of what is now considered India's…

1964–1978· ~1964 CE

Manipur

The prolonged wait for statehood fuels armed separatism: the UNLF (1964), PREPAK (1977) and PLA (1978) are founded, beginning decades of insurgency.

1 November 1966· ~1966 CE

Himachal Pradesh

Following Punjab's linguistic reorganisation, the Punjab Reorganisation Act transfers the Kangra, Kullu, Shimla and Lahaul-Spiti hill districts (plus parts of Una, Hoshiarpur and Gurdaspur) to HP — roughly tripling its territory and populat…

25 January 1971· ~1971 CE

Himachal Pradesh

Himachal Pradesh becomes India's 18th state, with Y.S. Parmar — who had led the self-government movement since the 1940s — as its first Chief Minister.

21 Jan 1972· ~1972 CE

Manipur

Manipur attains full statehood under the North-Eastern Areas (Reorganisation) Act, 1971, alongside Tripura and Meghalaya.

1979–1985· ~1979 CE

Assam

The Assam Movement , led by the All Assam Students Union, agitates for six years against illegal immigration, at a cost of roughly 855 lives, ending in the Assam Accord (1985) — which fixes 24 March 1971 as the cutoff date for citizenship d…

1980–2026· ~1980 CE

Kerala

Kerala politics settles into an alternating two-front system — the Left Democratic Front (founded 1980) and United Democratic Front (formed 1979) — trading power almost every election cycle, until the UDF's 2026 win ended Pinarayi Vijayan's…

2-3 December 1984· ~1984 CE

Madhya Pradesh

A methyl isocyanate gas leak at the Union Carbide India Limited pesticide plant killed an estimated 15,000-20,000 people and left roughly half a million survivors with chronic respiratory and other conditions — the world's worst industrial…

1 November 2000· ~2000 CE

Madhya Pradesh

The Madhya Pradesh Reorganisation Act carved out the state's southeastern, Mahanadi-basin districts to form Chhattisgarh. Until this split, MP had been India's largest state by area; afterward it fell to 2nd-largest, behind Rajasthan — a bi…

9 November 2000· ~2000 CE

Uttar Pradesh

Almost exactly fifty years after the renaming, UP's Kumaon and Garhwal hill divisions are carved off to form the new state of Uttarakhand, cutting the state from roughly 83 districts to 70 (since grown back to 75 through later subdivisions)…

31 Aug 2019· ~2019 CE

Assam

The final updated National Register of Citizens (NRC) , ordered by the Supreme Court in 2013, is published: of 3.3 crore applicants, roughly 19 lakh are excluded . The Supreme Court upholds the constitutional validity of the Accord's Sectio…

29 Dec 2023· ~2023 CE

Assam

The pro-talks faction of ULFA (United Liberation Front of Asom, founded 1979) signs a tripartite peace accord with the Union and state governments, disbanding and renouncing violence — though the breakaway ULFA-Independent faction remains a…

2023· ~2023 CE

Maharashtra

Aurangabad is officially renamed Chhatrapati Sambhajinagar, and Osmanabad becomes Dharashiv — part of a broader renaming of Mughal/Nizam-era place names to Maratha-era ones.

2023–2024· ~2023 CE

Manipur

The state effectively partitions along armed buffer zones; a 142-day internet shutdown runs May– September 2023. By late 2024, 258 dead, roughly 60,000 displaced, thousands of houses and hundreds of religious structures destroyed.

2023–2024· ~2023 CE

Rajasthan

CM Ashok Gehlot's government creates 19 new districts and 3 new divisions in March 2023 (33 → 50 districts) ahead of state elections; after BJP's Bhajan Lal Sharma becomes Chief Minister in December 2023, a review committee recommends a par…

22 January 2024· ~2024 CE

Uttar Pradesh

The Ram Mandir at Ayodhya is consecrated, triggering a tourism and infrastructure boom that has remade the town's economy within two years.

Feb 2025 – Feb 2026· ~2025 CE

Manipur

Chief Minister N. Biren Singh resigns; President's Rule is imposed (13 Feb 2025), extended once, then revoked on 4 Feb 2026 with Yumnam Khemchand Singh sworn in as Chief Minister — though reconciliation remains incomplete.