What was the name of Maharaja of Manipur who signed the Instrument of Accession with the Indian government on the assurance that internal autonomy of Manipur would be maintained?

Bodhachandra Singh

The correct answer is Option (3) → Bodhachandra Singh

A few days before Independence, the Maharaja of Manipur, Bodhachandra Singh, signed the Instrument of Accession with the Indian government on the assurance that the internal autonomy of Manipur would be maintained. Under the pressure of public opinion, the Maharaja held elections in Manipur in June 1948 and the state became a constitutional monarchy. Thus Manipur was the first part of India to hold an election based on universal adult franchise