In which year did the British government reverse the Partition of Bengal?

The Partition of Bengal enacted in 1905 divided the province into Eastern and Western Bengal primarily for administrative purposes. However the move was met with widespread protests and political agitation led by Indian nationalists who viewed it as an attempt to weaken the independence movement. The British government annulled the partition in 1911 reuniting Bengal. This reversal was a significant victory for the nationalist movement boosting morale and political unity. The episode also played a pivotal role in shaping the early strategies of the Indian National Congress against colonial policies.