The Partition of Bengal made by Lord Curzon in 1905 lasted until

The Partition of Bengal made by Lord Curzon in 1905 lasted until

the First World War when Indian troops were needed by the British and the partition was ended
King George V abrogated Curzon's Act at the Royal Durbar in Delhi in 1911
Gandhiji launched his Civil Disobedience Movement
the Partition of India in 1947 when East Bengal became East Pakistan
This question was previously asked in
UPSC IAS – 2014
The Partition of Bengal, enacted by Lord Curzon in 1905, did not last until the First World War or the Partition of India in 1947. It was annulled in 1911. The annulment was announced by King George V at the Delhi Durbar on December 12, 1911, in response to widespread protests and the Swadeshi movement.
– The Partition of Bengal was implemented in 1905 by Lord Curzon.
– It led to significant political unrest and the launch of the Swadeshi movement.
– The partition was revoked in 1911.
– The decision to annul was announced at the Delhi Durbar.
Upon annulment, Bengal was reunified, but new provincial boundaries were created; Bihar and Orissa were separated from Bengal, and Assam became a separate province. The capital of British India was also shifted from Calcutta to Delhi in 1911.