The 56^th Amendment Act (1987), enabled the formation of the state of

The 56th Constitutional Amendment Act (1987) granted full statehood to Goa, which was previously a Union Territory. Mizoram became a state earlier (1986, 53rd Amendment), Arunachal Pradesh and Tripura also gained statehood in 1986. This amendment completed the process of northeastern state reorganization that began in the 1970s.