when did the unification of bengal take place
Partition of Bengal (1905) Due to these political protests, the two parts of Bengal were reunited on 12 December 1911. A new partition which divided the province on linguistic, rather than religious grounds followed, with the Hindi, Oriya and Assamese areas separated to form separate administrative units: Bihar and Orissa Province was created to the west, and Assam Province to the east. The administrative capital of British India was moved from Calcutta to New Delhi as well.
History of Kolkata The three villages, in particular Kalikata, where Calcutta is located, came into the possession of the British East India Company in 1690 and some scholars like to date its beginnings as a major city from the construction of Fort William by the British in 1698, though this is debated (see the court ruling in "Name and origins" above). From 1772 to 1911, Calcutta was the capital of British India. From 1912 to India's Independence in 1947, it was the capital of all of Bengal. After Independence, Calcutta remained the capital of the Indian state of West Bengal.