After Indian Independence from British Rule in 1947, the Northeastern region of British India consisted of Assam and the princely states of Manipur and Tripura. Subsequently, Nagaland in 1963, Meghalaya in 1972, Arunachal Pradesh in 1975 (capital changed to Itanagar) (formed on 20 February 1987) and Mizoram in 1987 were formed out of the large territory of Assam. Manipur and Tripura remained Union Territories of India from 1956 until 1972, when they attained fully-fledged statehood. Sikkim was integrated as the eighth North Eastern Council state in 2002.