Tenth Amendment of the Constitution of India of Goa, Daman and Diu in 1961, and KG Badlani, an officer of the Indian Administrative Service (IAS) was designated Prime Minister of Dadra and Nagar Haveli for one day, so that, as head of state, he could sign an agreement with Prime Minister Jawaharlal Nehru to merge Dadra and Nagar Haveli formally with the Republic of India. On 31 December 1974, a treaty was signed between India and Portugal recognising India's sovereignty over Goa, Daman, Diu, Dadra and Nagar Haveli. The Portuguese occupied Nagar Haveli on 10 June 1783 on the basis of Friendship Treaty executed on 17 December
Prime Minister of India or AIC001), and maintained by the Indian Air Force—are used. The Special Protection Group (SPG) is charged with protecting the sitting prime minister and his/her family. The Prime Minister's Office (PMO) acts as the principal workplace of the prime minister. The office is located at South Block, and is a 20-room complex, and has the Cabinet Secretariat, the Ministry of Defence and the Ministry of External Affairs adjacent to it. The office is headed by the Principal Secretary to the Prime Minister of India, generally a former civil servant, mostly from the Indian Administrative Service (IAS) and rarely from the