Anantam IASPost · 20 April 2026

Partition of Bengal (1905): Causes, Swadeshi, and Annulment

Study Notes · GS I · Indian History

Partition of Bengal 1905: Lord Curzon's plan, Swadeshi and Boycott movement, role of Congress, 1911 annulment, and its place in Indian freedom struggle.

The Partition of Bengal was announced by Viceroy Lord Curzon on 19 July 1905 and took effect on 16 October 1905, splitting the vast Bengal Presidency into two provinces — Bengal proper, and a new province called Eastern Bengal and Assam with its capital at Dhaka. Justified by the British as an administrative measure, it was widely seen as a political move to weaken the growing nationalist movement by dividing Hindus and Muslims. It triggered the Swadeshi and Boycott Movement and remains a pivotal milestone in India's freedom struggle. This guide explains the background, administrative details, nationalist response, and the partition's eventual annulment in 1911.

Background and Administrative Context

The Bengal Presidency under the British covered a massive area including present-day West Bengal, Bihar, Jharkhand, Odisha, Bangladesh, and Assam, with a population of around 78 million. By the late 19th century the presidency was considered unwieldy to govern.

Details of the Partition

partition of bengal — figure 1

The partition created two administrative units:

ProvinceAreaMajorityCapital
Bengal (west)West Bengal, Bihar, OdishaHinduCalcutta
Eastern Bengal and AssamEast Bengal, AssamMuslimDhaka

Key features:

The Swadeshi and Boycott Movement

The partition triggered the first mass nationalist movement in modern India, known as the Swadeshi Movement (1905–1911).

Key features of the movement:

Leaders associated with the movement include Bipin Chandra Pal, Aurobindo Ghosh, Surendranath Banerjee, Ashwini Kumar Dutt, Lala Lajpat Rai, and Bal Gangadhar Tilak. The slogan "Vande Mataram" became the movement's battle cry.

Congress Response and the Surat Split

partition of bengal — figure 2

The Indian National Congress endorsed Swadeshi at its Banaras Session (1905) under Gopal Krishna Gokhale and more forcefully at the Calcutta Session (1906) under Dadabhai Naoroji, where the fourfold goals were declared: Swaraj, Swadeshi, Boycott, and National Education.

The methods of struggle polarised the Congress:

The divergence culminated in the Surat Split of 1907, which weakened the movement temporarily.

Rise of Revolutionary Nationalism

The perceived failure of constitutional methods pushed a section of youth toward revolutionary activity.

Communal Impact and the Muslim League

partition of bengal — figure 3

The partition had lasting communal consequences.

Annulment of the Partition

The sustained agitation and global condemnation made the partition untenable.

The annulment is widely regarded as the first major political victory of Indian nationalism, demonstrating that organised mass agitation could reverse imperial decisions.

Significance in Indian History

UPSC Relevance

Prelims focus:

Mains GS angle (GS Paper I – Modern History):

Sample PYQ angle: UPSC has previously asked about the aims of the Swadeshi Movement, the Surat Split, and the significance of the Bengal partition. Expect analytical questions linking Swadeshi economic ideas to later Gandhian thought.