Explanation:

Himachal became a Part 'C' state on 26 January 1950 with the implementation of the Constitution of India and the Lieutenant Governor was appointed. The Legislative Assembly was elected in 1952. Himachal Pradesh became a union territory on 1 November 1956.[18] Some areas of Punjab State— namely Simla, Kangra, Kullu and Lahul and Spiti Districts, Nalagarh tehsil of Ambala District, Lohara, Amb and Una kanungo circles, some area of Santokhgarh kanungo circle and some other specified area of Una tehsil of Hoshiarpur District, besides some parts of Dhar Kalan Kanungo circle of Pathankot tehsil of Gurdaspur District—were merged with Himachal Pradesh on 1 November 1966 on enactment by Parliament of Punjab Reorganisation Act, 1966