The North-East Frontier Agency, also known as North-East Frontier Tracts, was a political division of British India. Its symbol is NEFA. It joined the state of Assam after gaining independence in 1947, and remained governed by that state until it was given the new designation of Union territory. It was called the Union Territory of Arunachal Pradesh on January 20, 1972. Later, on February 20, 1987, it was awarded the title of a state. It was now under the control of the state's chief minister. One of India's 29 states is called Arunachal Pradesh. It is one of the states in the north of the nation. State borders with Assam and Nagaland are shared by this country. Bhutan, China, and Myanmar are all neighbours as well as other nations on its international borders. Itanagar serves as the state capital. There are 23 districts in all. The majority of the population is Buddhist.
Previous to 20 January 1972, when it became the Union Territory of Arunachal Pradesh and certain portions of Assam, the North-East Frontier Agency (NEFA), formerly known as the North-East Frontier A political division in British India and later the Republic of India was called a tract. Its administrative centre was located at Shillong (until 1974, when it was transferred to Itanagar). The country was given citizenship on February 20th, 1987.
The Balipara Frontier Tract was divided in 1954 into three divisions: Kameng Frontier Division, Subansiri Frontier Division, and Tirap Frontier Division. (4) Siang Frontier Division was given to Abor Hills District, while (5) Lohit Frontier Division was given to Mishmi Hills District (the Naga tribal area known as Tuensang Frontier Division, which had previously been included in the territory, was excluded from it in 1957.). NorthEast Frontier Agency, or NEFA, was the collective name for the area.Six frontier divisions were created from the North-East Frontier Agency on January 26, 1954: Kameng (previously Sela Sub-Agency), Subansiri (previously Subansiri area), Tirap (previously Tirap Frontier Tract), Siang (previously Abor Hills district), Lohit (previously Mishmi Hills district), and Tuensang. Naga Hills-Tuensang Area was created on December 1st, 1957, by the separation of Tuensang and its attachment to the newly created Naga Hills district. The agency's management was moved from the foreign office to the Department of the Interior in August 1965. As a result, on December 1, 1965, its five districts—Kameng, Subansiri, Siang, Lohit, and Tirap—became its five frontier divisions. In these districts, the political officer was replaced as the administrative chief by a deputy commissioner. For improved management, an Agency Council was established in 1967. Constitutionally speaking, it was a part of Assam state until 1972 and was directly run by the governor of Assam in his capacity as the President of India's agent. The North-East Frontier Agency was given the status of a Union Territory on January 21, 1972, and a Chief Commissioner was given control over it.
The history of Upper Siang dates back to the period when Arunachal Pradesh was a separate country free from any administrative supervision up until the Anglo-Burmese War in 1826–1861 and was afterwards recognised as a conquered region by the British and placed under non-regulated territory.
Until a distinct Chief Commissioner position and a designated district law were passed in 1874, Arunachal Pradesh too continued to be a part of Bengal. Following the Government of India, Foreign & Political Department Notification of 1914, Arunachal gained its own identity when it was separated from Assam and given the designation North-East Frontier Tract (NEFT). Because of this, the current Upper Siang region is now a component of the Central Section of the NEFT, which is under the administrative control of a political officer.
The same tract's Central Section and Eastern Section were renamed the Sadiya Frontier Tract in 1919, with Sadiya serving as the administrative centre. Abor Hills District and Mishmi Hills District, two distinct regions with administrative charges, were created from the Sadiya Frontier Tract in 1948.
Arunachal was included in Assam and was covered by Part-"B" of the Constitution's 6th schedule following India's Independence. The region was subsequently scheduled as a part of Assam from 1950 to 1965, during which time Abor Hills District was renamed Siang Frontier Division. The region later became the North-East Frontier Agency (NEFA) in 1951, was reconstituted under the NEFA (Administration) Regulation in 1954, and was then designated as such from 1950 to 1965.
The Siang Frontier Division was renamed Siang District and Governmental Officer was re-designated as Deputy Commissioner with its headquarters in Along in 1965 when the responsibility for NEFA Administration was transferred to the Ministry of Home Affairs (in accordance with the recommendations of the Daying Ering Commission).
The NEFA Panchayati Raj Regulation Act, passed by the Indian government in 1967, gave traditional village councils the status of grama panchayats, with the agency council serving as the Panchayati Raj's highest authority.
On January 20, 1972, the NEFA was renamed Arunachal Pradesh and became a Union Territory. The Agency Council was replaced by the Pradesh Council, which became the Legislative Assembly in 1975. The first election for the 30 member Legislative Assembly was then held in 1978.
East Siang and West Siang districts were created out of the Siang District in 1980. Upper Siang as it is today remains a part of the East Siang district, which has Pasighat as its administrative centre.
On February 20, 1987, the Union Territory received full statehood, increasing the number of Legislative Assembly members from 30 to 60.
Upper Siang was finally split off from the East Siang district in 1994, with its headquarters located in Yingkiong.