The Failure of Lord Wavell:

        As Viceroy, Lord Wavell could neither make his plan a success nor Cabinet Mission met with success. To please and gain the favour of Congress, an attempt to implement half of the Cabinet Mission Plan was made i.e. without the grouping of provinces, formation of Interim Government and constitution framing process was started. Quaid-e-Azam (Rahmatullah) allowed the Muslim League to participate in the Interim Government expediently but he decided to boycott the Legislative Assembly. He wanted to implement the whole of the Plan. Thus, the process of framing the constitution could not be started. Disappointed by the dead-lock, the British Government decided to adopt a new line of action.

Appointment of Lord Mountbatten as a Viceroy:

        The British Government replaced Lord Wavell by Lord Mountbatten. In March 1947, he was sent to India as Viceroy when the implementation process of transfer of power was at the last stage. On 20^th February, 1947, the British Prime Minister announced that the British rule in the Sub-continent will come to an end by June, 1948.

Negotiations with Political Leaders:

         At last, the British Government started its final planning to wind up its power. The British Prime Minister sent Lord Mountbatten to the Sub-continent with clear instructions. Immediately after his arrival, he met important leaders and held negotiations with them. He met Nawabs and Rajas of Princely states.

No solution other than Partition:

      Mountbatten realized that no solution other than partition could be found. Now there was the question of establishing the principles of partition. One after another, the leaders of Congress started to think Two-Nation Theory a reality.

Personal Relations:

      Lord Mountbatten and Lady Mountbatten had personal relations with Nehru Family. Other leaders of Congress also considered Mountbatten their sympathetic and affectionate friend.

Plan of Unbalanced and Weak Pakistan:

      Considering the partition indispensable, a conspiracy was planned by the Congress in collaboration with Lord Mountbatten to complete the process of partition in such a manner as a truncated, unbalanced and weak Pakistan was made that would be compelled to be a part of India soon.

Framing the Basic Principle of Partition:

     Lord Mountbatten, with the help of his staff, started framing the basic principles of partition to determine the boundary lines of both of the centuries. He assured the leaders of the Congress confidentially that the partition process would take place according to their wishes and the conditions laid down by them would be preferred. It was the result of a conspiracy that main leaders of the Congress began to avoid opposing the partition.

Approval of Plan by the British Government:

     Lord Mountbatten took the scheme, prepared in secret with Congress, to London for approved by the British Government.