The Partition of Bengal came into effect in the year 1905.
It was officially implemented on 16 October 1905 by the British Viceroy Lord Curzon. The province of Bengal was divided into two parts—Eastern Bengal and Assam, and Western Bengal. The British government claimed that the partition was done for administrative convenience, as Bengal was a very large province.
However, Indians believed that the real motive behind the partition was to follow the policy of “Divide and Rule” by creating divisions between Hindus and Muslims. This decision led to widespread protests across the country and gave rise to the powerful Swadeshi Movement, which encouraged the boycott of British goods and the promotion of indigenous industries.
The strong opposition and mass movements eventually forced the British government to annul the partition in 1911.