Explanation:

Atlee’s Announcement: The Prime Minister of the United Kingdom announced in February 1947 that:The British Government would grant full self-government to British India by June 1948 at the latest,The future of the Princely States would be decided after the date of final transfer is decided.The Indian Independence Act was formulated by the government of Attlee and the Governor General of India Lord Mountbatten, after representatives of the Indian National Congress, the Muslim League, and the Sikh community came to an agreement with Lord Mountbatten on what has come to be known as the 3 June Plan or Mountbatten Plan.This plan was the last plan for independence.