Manipur State Constitution Act 1947
Manipur State Constitution Act 1947 is an act which enabled the princely state of Manipur to have a de jure written constitution enacted by the last Maharajah of Manipur, Bodhchandra Singh. Under the constitution, a Legislative Assembly was elected in mid-1948 and a ministry was formed, which was responsible to the Maharaja.
Source: Wikipedia — Manipur State Constitution Act 1947 (CC BY-SA 4.0)