How has the classification of autonomous districts and regions evolved over time?
The classification of autonomous districts and regions has evolved over time through various amendments and reorganizations. Some key changes include:

1. Inclusion or exclusion of areas in the Table appended to paragraph 20 of the Schedule (sub-paragraph 3(a) and (b)).
2. Creation of new autonomous districts (sub-paragraph 3(c)).
3. Increase or decrease in the area of existing autonomous districts (sub-paragraph 3(d) and (e)).
4. Unification of two or more autonomous districts or parts thereof to form a single autonomous district (sub-paragraph 3(f)).
5. Alteration of the name of an autonomous district (sub-paragraph 3(ff)).
6. Definition of the boundaries of any autonomous district (sub-paragraph 3(g)).

These changes have been made through various acts and amendments, such as the State of Mizoram Act (1986), the North-Eastern Areas (Reorganisation) Act (1971), the Constitution (Forty-ninth Amendment) Act (1984), and others.