Timeline for Bihar
- 560-480 BCE: Anga, Buddha
- 490 BCE: Establishment of Patliputra (Modern Patna)
- Before 325 BCE: Anga, Nanda clan in Magadha, Licchavis in Vaishali
- Before 500 BCE: Foundation of world's first republic in Vaishali.
- 450-362 BCE: Emperor Mahapadma Nanda is ruler of the Magadh Empire, Nanda Dynasty; Start of the Golden Age of Bihar
- 304 BCE: Ashok Maurya born in Patliputra
- 325-185 BCE: Magadh Empire under the Maurya Dynasty
- 340 BCE: General Chandragupta Maurya crowned Emperor of Magadh; Chandragupta is the first Mauryan emperor
- 273 BCE Ashok Maurya crowned new Emperor of Magadh, Bihari-Magadhi Buddhism is exported to Persian Empire, Greece, China and East Asia
- 273-232 Conquest of 'Indian' region by Ashok the Great (Modern Afghanistan, Pakistan, southern India, and Gujarat) falls under Magadh territories and taxation system.
- 232 BCE Death of Emperor Ashok Maurya
- 250 BCE: 3rd Buddhist Council
- 185 BCE-80 CE: The Magadh Empire falls under the Sunga Dynasty after the military coup by General Pusyamitra Shunga.
- 71BC - 26BC: Magadh Empire falls under the Kanva Dynasty
- 240 - 600: Magadh Empire falls under the Gupta Dynasty. First ruler is Chandra Gupta
- 375-415: Emperor Chandragupta II
- 500; Attack by Huns weakens the Imperial center in Patliputra. Proviences break away. End of the Bihari Golden Age
- 600 - 650: Harsha Vardhana empire expands in to Magadh from the Haryana region
- 750 - 1200: The Bengali Pala Dynasty Expands in to Magadh
- 1200: Bakhtiyar Khilji's army destroys the universities at Nalanda and Vikramshila in Bihar. Start of the Muslim Era.
- 1200-1400: Sharp decline of Buddhism in Bihar and northern India in general
- 1250-1526: Magadh becomes a core part of the Delhi Sultanate e Hind (Hindustan).
- 1526-1540: Mughal Emperor, Babur, defeats the last Sultan of Delhi, Lodi, and establishes the Mughal Dynasty in Delhi and Agra
- 1540-1555: New empire from Bihar (Magadh), with Shenshah SherShah Suri (from Sasaram, modern south Bihar). SherShah captures empire from Mughals. (SherShah built the Grand Trunk Road, introduced the Rupee and Custom Duties)
- 1556: Mughal dynasty restored in Agra after the Battle of Panipat, centre of power moves back to Delhi-Agra region
- 1556 - 1764: Bihar is a wealthy, core territory/ province of the Mughal Sultanate-e-Hind (Hindustan)
- 1666: Guru Gobind Singh The 10th and last Sikh Guru, is born in Patna
- 1757-1857: The British East India Company expands it rule in to Bihar from Bengal
- 1764: Battle of Buxar, Core lands of Mughal Hindustan are put firmly under British Company government. Tax collection rights are now a duty of the Company.
- 1764-1920 Migration of Bihari & United Provices (Eastern Uttar Pradesh) workers across the British Empire by the Company and later Crown Government. Bihari migrant population dominate and settle in Guyana, Surinam, Trinaded-Tobago, Fiji, Mauritius, and Natal-South Africa. Smaller settler colonies also established in Jammica and West Indies in general.
- 1857: Period of the north Indian Rebellion of 1857 Bihari, Purvanchli, & Western UP East India Company Sepoys (80% Hindu according to William Daryample in the book "The Last Mughal") declare Bahadur Shah Zafar II Emperor of Hindustan. The region becomes the centre of resistance to the East India Company. End of the Muslim Era.
- 1858: Mughal Sultanate-e-Hind reorganised to form the new British Indian Empire after the British Government abolishes the East India Company. Start of the British Age
- 1877: House of Windsor is made the new Imperial Royal Family. Queen Victoria declared the first Emperess of the British Indian Empire
- 1912: Province of Bihar and Orissa separated from Bengal
- 1913: Start of the dramatic slowdown in wealth creation in India and Bihar
- 1916: Patna High Court founded
- 1917: Patna University established
- 1925: Patna Medical College Hospital established under the name "Prince of Wales Medical Collage"
- 1935: 1935 Government of India Act federates the Indian Empire and creates a new Bihar. End of the British Age.
- 1936: Sir James David Sifton appointed the first Governor of Bihar.
- 1937: Srikrishna Sinha is the first Chief Minister of Bihar
- 1947: Indian Independence; Bihar becomes a state in the new Dominion of India. Religious violence leads to the migration of millions of Bihari Muslims to the new Pakistani states of Sindh and East Pakistan (East Pakistan known as Bangladesh since 1971)
- 1947-1950 Dominion of India is replaced by a republic in 1950. Central Government adopts symbols of ancient Imperial Bihar (Ashok Chakra added to the Indian flag, the Lion Pillor is made the symbol of the central government of India, all state governments, reserve bank, and the military, whilst the Bihari Rupee is retained as the currency)
- 1973: Indian wealth creation beings to recover; surge in all India GDP starts again
- 1975 - 1977: Suspension of the Republican Constitution. Bihar is the centre of resistance against the Emergency
- 1984: Indira Gandhi Assassination leads to deadly anti-Sikh Riots in northern India, including Bihar
- 1989 - 2004: Lalu Prasad/ Rabri Devi term of Government (RJD Party).
- 1992: Bihar ecsapes sever rioting after the destruction of Babri Masjid.
- 2000: Bihar divided into two states by NDA central government - The northern part retains the name "Bihar", whilst southern (and more industralised region) becomes the State of Jharkhand.
- 2002 - 2004: Deadly crime wave grips Patna and Bihar
- 2003: First Bihari-Bhojpuri Immigrant Worker Crisis; Bihari migrants attacked in Mumbai, and hundreds killed and tens of thousands flee Assam
- 2005: In Feb, Lalu Prasad/ Rabri Devi lose power after 15 years, Presidents rule declared after no party wins overall majority in lower house
- 2005: In November, Janta Dal (United) with the BJP wins the state election with a working majority. Nitish Kumar becomes the first NDA Chief Minister of Bihar
- 2007:First Global Meet for a "Resurgent Bihar" was organised in Patna.President APJ Abdul Kalam inaugurated the meet.
- 2008: Second Bihari-Bhojpuri Immigrant Worker Crisis: Marathi politicians attack Purvanchali and Bihari working class society. Hundreds of Thousands of Bihari and Eastern UP migrants report hate crimes. Over 250,000 people flee Maharashtra by end March 2008. Migrants flee North East India, after confirmed reports of more Uttar Pradeshi & Bihari migrants killed in Assam, Manipur
- 2008: Floods in Mithla region kill 3,000 people, displace millions.
- 2010 : Nitish Kumar again becomes Bihar Chief Minister after a historic mandate.
- 2011 : Right to Service Acts, implemented on 15 August 2011.