evidence: Madras State was renamed Tamil Nadu in 1969. The north-eastern states of Manipur, Meghalaya and Tripura were formed on 21 January 1972.[14] Mysore State was renamed Karnataka in 1973. On 16 May 1975, Sikkim became the 22nd state of the Indian Union and the state's monarchy was abolished.[15] In 1987, Arunachal Pradesh and Mizoram became states on 20 February, followed by Goa on 30 May, while erstwhile union territory of Goa, Daman and Diu's northern exclaves Damão and Diu became a separate union territory as Daman and Diu.[16] [...] Union territories [edit]Former states and union territories [edit]Former states [edit]Former union territories [edit]Responsibilities and authorities [edit]The Constitution of India distributes the sovereign executive and legislative powers exercisable with respect to the territory of any state between the Union and that state.[62] [...] - ^ "Nagaland History & Geography-Source". Government of India. Archived from the original on 7 July 2011. Retrieved 17 June 2013.