How has the scope of tribal areas changed after Meghalaya and Tripura were added to the autonomous State in 1984?
After Meghalaya and Tripura were added to the autonomous State in 1984, the scope of tribal areas expanded to include not only the areas specified in Part I of the table appended to paragraph 20 of the Sixth Schedule but also those specified in the First Schedule (Part A or Part B) after the Seventh Amendment Act of 1956. The scope was further broadened with the North-Eastern Areas (Reorganization) Act, 1971 and the State of Mizoram Act, 1986, which added more tribal areas to be included in the autonomous State.