1757: Plassey and the East India Company’s Conquest

Bengal in 1757 was a formally Mughal but effectively autonomous province encompassing Bengal, Bihar and Orissa. Its productive agriculture, textiles, silk, saltpetre and river-borne trade made it one of Eurasia’s richest commercial regions. The Mughal emperor still conferred legitimacy, but governors had exercised hereditary regional power since Murshid Quli Khan’s consolidation of the nawabship in the early 18th century.

The English East India Company, chartered in 1600, was one among several armed trading corporations. It held Calcutta, while the French Compagnie des Indes operated at Chandernagore. Company servants exploited Mughal customs exemptions and private trade, creating repeated disputes with Bengal’s government. Europe’s Seven Years’ War, fought from 1756 to 1763, turned this competition into an imperial conflict.

Siraj-ud-Daulah became nawab in April 1756. In June 1756 his forces captured Calcutta after the English strengthened its fortifications without authorization. British accounts later centered the “Black Hole” story: John Zephaniah Holwell claimed in 1758 that 146 prisoners entered a cell and 23 survived. Historian Brijen Gupta concluded in 1959 that about 64 people were confined and 21 survived; the exact number remains disputed, and Holwell’s account became imperial propaganda.

“The Company are sovereigns in Bengal, and merchants everywhere else.” — Philip Francis, minute in the Bengal Council, 1776.

By 1757, Company officers were not merely defending trade. They were negotiating to remove Bengal’s ruler.

Robert Clive and Company officials allied with disaffected Bengali elites, including commander Mir Jafar, financier Jagat Seth, merchant Omichand and administrator Rai Durlabh. A secret agreement promised Mir Jafar the nawabship. Clive deceived Omichand with a false version of the agreement after the merchant demanded payment for silence; Admiral Charles Watson refused to sign it, and his signature was reportedly forged.

On 23 June 1757, near the village of Palashi—anglicized as Plassey—the armies faced one another beside the Bhagirathi River. Modern histories commonly give Siraj’s force as about 50,000 infantry and cavalry with roughly 50 cannon, against approximately 3,000 Company troops, including about 800 European infantry and 2,100 Indian sepoys, with 8 field guns and 2 howitzers. Exact muster figures vary among contemporary reports.

The numerical imbalance concealed the conspiracy. Mir Jafar, Rai Durlabh and Yar Lutuf Khan withheld most of their formations. Only contingents led by Mir Madan and Mohan Lal fought seriously. Rain soaked inadequately protected nawabi powder, while Company ammunition remained usable under tarpaulins. Mir Madan was killed, Siraj’s command disintegrated, and the army withdrew. Siraj fled, was captured and was killed on 2 July 1757 by Muhammad-i-Beg, acting for Mir Jafar’s son Miran.

Date	Event	Consequence
April 1756	Siraj-ud-Daulah becomes nawab	Conflict with Company fortification and privileges intensifies
20 June 1756	Nawabi forces take Calcutta	Company personnel retreat; British retaliation follows
2 January 1757	Clive retakes Calcutta	Company restores its Bengal base
9 February 1757	Treaty of Alinagar is signed	Siraj temporarily confirms Company privileges
23 March 1757	Company forces capture French Chandernagore	Siraj loses a potential European counterweight
5 June 1757	Company concludes its secret compact with Mir Jafar	The nawab’s commander agrees to defect
23 June 1757	Battle of Plassey	Siraj’s army collapses after senior commanders stand aside
29 June 1757	Mir Jafar is installed at Murshidabad	The Company gains a dependent nawab
2 July 1757	Siraj-ud-Daulah is killed	Organized restoration becomes far less likely
22 October 1764	Company wins the Battle of Buxar	Military supremacy extends beyond Bengal
12 August 1765	Shah Alam II grants the diwani	Company receives revenue rights over Bengal, Bihar and Orissa
1772–1773	Warren Hastings reforms rule; Regulating Act passes	Revenue government is centralized and Parliament begins oversight

Plassey’s battlefield losses were small relative to its consequences. Clive’s dispatch of 26 July 1757 reported Company losses of 22 killed and 50 wounded, totaling 72 casualties. He estimated the nawab’s losses at about 500 killed, although this was a victor’s estimate rather than an audited count.

The post-battle transfer was enormous. Company records summarized by historian P. J. Marshall in 1987 place the settlement imposed on Mir Jafar at approximately £2.34 million in 1757 money, distributed among the Company, its army and navy, Calcutta’s European inhabitants and individual officials. Marshall calculated that Clive personally received £234,000 in 1757, besides a later jagir yielding about £27,000 annually. Conversion into modern currency depends on whether prices, wages or economic share are measured, so a single present-day equivalent is misleading.

The sums mattered because the victors could reinvest Bengal’s resources in warfare. Indian revenues increasingly financed Company armies, administration and purchases of export goods. Britain’s imperial expansion was no longer dependent solely on capital remitted from Europe.

Mir Jafar could not satisfy continuing Company demands. The Company replaced him with Mir Qasim in 1760, restored Mir Jafar in 1763, and defeated Mir Qasim’s coalition with Mughal emperor Shah Alam II and Awadh’s ruler Shuja-ud-Daula at Buxar on 22 October 1764. On 12 August 1765, Shah Alam II granted the Company the diwani. A joint regime followed: Indian officials nominally governed while the Company extracted revenue without accepting full public responsibility.

Plassey was “a transaction in which the British East India Company became a political power.” — P. J. Marshall, Bengal: The British Bridgehead, 1987.

Revenue pressure, administrative disruption, war and grain-market failures formed the political economy in which the Bengal famine of 1769–1773 became catastrophic. Contemporary administrator Henry Verelst wrote in 1772 that roughly one-third of Bengal’s inhabitants had died; later scholarship treats this as an uncertain contemporary estimate, often expressed as about 10 million deaths, not a census result. Company land revenue nonetheless rose from about £1.52 million in 1768–1769 to about £1.57 million in 1770–1771, according to figures reproduced by historian Romesh Chunder Dutt in 1902.

Parliament’s Regulating Act of 1773 created a governor-general at Fort William and subjected the Company to limited state oversight. The India Act of 1784 established further government control. Corporate conquest thus helped generate a hybrid imperial system: private shareholders collected returns while British institutions protected and supervised territorial rule. Follow its expansion through the archive timeline.

British imperial histories long presented Plassey as Clive’s audacious victory over an oriental despot. That version minimized forged agreements, purchased defections and the extraction that followed. In South Asian memory, the name Palashi commonly marks the beginning of British political domination, although treating 23 June 1757 as a complete conquest obscures the resistance, negotiation and warfare extending through 1765 and beyond.

Siraj has often been recast as either a nationalist martyr or an incompetent tyrant. Neither label fully captures an 18th-century succession struggle in which bankers, commanders, merchants, European companies and Mughal authorities pursued their interests. Mir Jafar’s name became a byword for betrayal in Bengali, Urdu and Hindi political speech; that cultural memory accurately registers the conspiracy but can conceal the Company’s authorship, money and coercive force.

Robert Clive defended himself before Parliament in 1773 by declaring that he was “astonished at my moderation,” referring to the wealth available after Plassey. He was acquitted of formal wrongdoing, while the House of Commons resolved in 1773 that he had acquired £234,000 through powers entrusted to him, but had rendered “great and meritorious services” to Britain. The contradiction captures Plassey’s imperial legacy: conduct recognized as corrupt could still be honored when it enriched and enlarged the state.

• Encyclopaedia Britannica: Battle of Plassey
• P. J. Marshall, Bengal: The British Bridgehead
• British Library: The East India Company and the Raj
• UK Parliament: East India Company and the Raj
• William Dalrymple, The Anarchy
• Sushil Chaudhury, The Prelude to Empire: Plassey Revolution of 1757