Answer: 3 June, 1947
Notes: On 3 June 1947, Mountbatten announced the Partition Plan: Power to be relinquished to the two Governments of India and Pakistan on the basis of Dominion Status by 15 August 1947, much earlier than the original date of June 1948. In regard to the Princely States, the plan laid down that the policy of His Majesty's Government towards the Indian Princely States contained in the Cabinet Mission memorandum of 12 May 1946 would remained unchanged—the British Paramountcy would lapse, and their status would revert to what it was before.
