After Nawab Siraj-ud-Daulah’s forces captured Calcutta and Fort William, European prisoners were confined overnight in a small lockup later known as the “Black Hole of Calcutta.” The episode became a major British political and propaganda touchstone during the Company’s subsequent military intervention in Bengal.
The East India Company, led by Robert Clive, defeated Nawab Siraj-ud-Daulah at Plassey, enabling the Company to install Mir Jafar as nawab and secure decisive influence over Bengal’s politics and revenues—often treated as the starting point of Company rule in Bengal.
Within days of Plassey, the deposed nawab Siraj-ud-Daulah was captured and executed, consolidating the new Company-backed regime under Mir Jafar and reinforcing the Company’s control over Bengal’s political settlement.
Company forces under Hector Munro defeated the allied armies of the Mughal emperor, the Nawab of Awadh, and Mir Qasim. The victory confirmed Company power in eastern North India and set up the diplomatic settlement that formalized the Company’s revenue authority in Bengal and Bihar.
Following Buxar, the Mughal emperor Shah Alam II signed the Treaty of Allahabad, granting the East India Company diwani—the right to collect revenue—in Bengal, Bihar, and Orissa. This shift underpinned Bengal’s “commercial rule,” as fiscal extraction increasingly financed Company power.
A severe famine in Bengal and Bihar (1769–1770) occurred under the Company’s revenue regime and contributed to intense scrutiny of Company governance and fiscal practices. The crisis became a pivotal event in debates about Company rule and administrative capacity in Bengal.
Britain’s Regulating Act (1773) marked the first major parliamentary intervention in Company territorial administration. It created the post of Governor-General of Fort William in Bengal (with oversight over other presidencies) and signaled a shift toward tighter state supervision of Company rule.
A crown court—the Supreme Court of Judicature at Fort William—was established in Calcutta under the Regulating Act framework, introducing English judicial authority into Bengal’s Company state and intensifying jurisdictional conflicts with Company and local institutions.
Pitt’s India Act (1784) responded to perceived defects in earlier regulation by creating a Board of Control and formalizing a dual system in which the British government supervised Company political governance. This further constrained the Company’s autonomy while preserving its administrative role in Bengal.
Under Governor-General Cornwallis, the Permanent Settlement (1793) fixed land revenue demands and recognized zamindars as revenue-collecting landholders. It restructured Bengal’s agrarian political economy and became one of the most consequential fiscal institutions of Company rule.
Parliament renewed the Company’s charter but ended its commercial monopoly in India (while retaining exceptions such as tea/opium and China trade as specified). The change accelerated private British commercial entry into India and altered the Company’s position as both trader and ruler in Bengal.
The Government of India Act 1833 ended the Company’s remaining commercial functions and recast it as a purely administrative body governing British India under parliamentary authority, deepening the shift from mercantile corporation to state-like governing apparatus rooted in Bengal.
The uprising began with sepoy mutiny at Meerut, rapidly spreading and transforming into a broader rebellion against Company rule. Bengal’s Company army and fiscal-administrative order were central to both the causes and the initial spread of the conflict.
After the rebellion, Parliament passed the Government of India Act 1858, abolishing the Company’s governing role and transferring administration to the British Crown. This formally ended the East India Company’s commercial-political rule in Bengal and across British India.
British East India Company commercial rule in Bengal (1757–1858)
