In which year Chief Commissionership was introduced in Assam?

Solution (By Examveda Team)

On 6^th February 1874, Assam, including Sylhet, was severed from Bengal to form the Assam Chief-Commissionership, also known as the 'North-East Frontier'. Shillong was chosen as the capital of the Non-Regulation Province of Assam in September 1874. The Lushai Hills were transferred to Assam in 1897.