Partition of Bengal

The Partition of Bengal refers to the 1905 division of the unwieldy Bengal Presidency—then encompassing Bengal, Bihar, Orissa and Assam with a population exceeding 78 million—into two administrative units by Viceroy Lord Curzon. The partition took effect on 16 October 1905 under a notification that created the new province of Eastern Bengal and Assam (capital Dacca), with a Muslim majority of roughly 18 million against 12 million Hindus, leaving the residual province of Bengal (capital Calcutta) with a Hindu majority. Curzon officially justified the measure on grounds of administrative efficiency, arguing that the province was too large to govern, but Indian nationalists read it as a deliberate application of divide et impera—a stratagem to sever the politically conscious Bengali Hindu intelligentsia from the Muslim peasantry of the east and to weaken the rising tide of nationalism centred on Calcutta.

The partition catalysed the Swadeshi Movement and the Boycott Movement, formally inaugurated at a meeting in the Calcutta Town Hall on 7 August 1905, where the boycott of British goods was resolved. Rabindranath Tagore composed Amar Sonar Bangla (later Bangladesh's national anthem) and proposed Raksha Bandhan as a symbol of Hindu-Muslim unity. Leaders including Surendranath Banerjee, Bipin Chandra Pal, Aurobindo Ghosh and the Lal-Bal-Pal triumvirate channelled the agitation into wider demands, while the movement also spawned revolutionary terrorism through groups such as Anushilan Samiti and Jugantar. The Swadeshi phase encouraged indigenous enterprise—the Bengal National College (1906) and Bengal Chemical and Pharmaceutical Works among them—and shifted the Indian National Congress toward more assertive politics, exposing the Moderate–Extremist rift that culminated in the Surat Split of 1907.

The agitation simultaneously sharpened communal lines: the partition's perceived benefit to East Bengal Muslims contributed to the founding of the All-India Muslim League at Dacca on 30 December 1906 under the Nawab of Dhaka (Salimullah), and shaped the demand for separate electorates conceded in the Morley-Minto Reforms (Indian Councils Act, 1909). Sustained protest, revolutionary violence and the political costs led the British to annul the partition on 12 December 1911 at the Delhi Durbar, when King George V announced both the reunification of Bengal and the transfer of the imperial capital from Calcutta to Delhi—the latter partly to insulate the Raj from Bengali agitation. Bihar and Orissa were carved out as a separate province and Assam reverted to a Chief Commissionership. Many Muslims regarded the annulment as a betrayal, a grievance that deepened separatist sentiment.

For the UPSC Modern History paper, the Partition is a high-yield topic tested on its causes, the Swadeshi-Boycott methodology, its role in radicalising the Congress, and its annulment—frequently in prelims as date-matching and in mains as an analytical link to the genesis of communal politics. For CSS Pakistan Affairs, it is framed as an early milestone in the two-nation trajectory, examined alongside the Muslim League's formation and the Two-Nation Theory. Candidates must distinguish this 1905 administrative partition from the 1947 Radcliffe partition of Bengal at Independence.