system until 1971 (in India) and 1972 (in Pakistan), when the former ruling families were officially derecognised. The Aden Protectorate was transferred to the control of the British Foreign Office in 1937 and eventually became the independent state of South Yemen in 1967, resulting in the abolition of its salute states the same year. Just prior to Indian independence in 1947, the Persian Gulf Residency was likewise transferred to Foreign Office control, remaining in existence until the Trucial States became fully independent in December 1971, forming the United Arab Emirates (UAE) in early 1972. Salute states and equivalents When the ruler of a princely state arrived at the Indian capital (originally at Calcutta (Kolkata), then at Delhi), he was greeted with a number of gun-firings. The number of these consecutive "gun salutes" changed from time to time, be increased or reduced depending on the degree of honour which the British chose to accord to a given ruler. The number of gun salutes accorded to a ruler was usually a reflection of the state of his relations with the British and/or his perceived degree of political power; a 21-gun salute was considered the highest. The King (or Queen) of the United Kingdom (who until 1948 was also the Emperor of India) was accorded a 101-gun salute, and 31 guns were used to salute the Viceroy of India. The number of guns in a salute assumed particular importance at the time of holding of the Coronation Durbar in Delhi in the month of December 1911. The Durbar was held to commemorate the Coronation of King George V with guns firing almost all day. At that time there were three Princely States that were given 21 gun salutes. These were: The Maharaja Gaekwad of Baroda State The Maharaja of Mysore The Nizam of Hyderabad In 1917, the Maharaja Scindia of Gwalior was upgraded to a permanent and hereditary 21-gun salute, and the Maharaja of Jammu and Kashmir was granted the same in 1921. Both were granted the increased ranks as a result of the meritorious services of their soldiers in the First World War. Apart from these, no other Princely State received a 21-gun salute. Three of the most prominent princes, however, enjoyed a local salute of 21 guns within the limits of their own state and 19 guns in the rest of India. They were the Nawab (Begum) of Bhopal, the Maharaja