Master10
Indian States & Union Territories Module

Northeast States & Island Territories

Northeast India and the offshore island archipelagos exhibit distinct administrative structures, cultural heritages, and strategic geographic positions. The Northeast region comprises the 'Eight Sisters'—Assam, Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland, Tripura, and Sikkim—connected to the mainland via the narrow Siliguri Corridor. Governance in tribal tracts is reinforced through Autonomous District Councils under the Sixth Schedule and asymmetric federal protections under Article 371. In maritime regions, the Andaman and Nicobar Islands in the Bay of Bengal and the coral atolls of Lakshadweep in the Arabian Sea safeguard critical Exclusive Economic Zones (EEZ) and vital shipping lanes.

Key Concepts & Examination Highlights

  • The Sixth Schedule of the Constitution provides autonomous administrative governance for tribal areas in four northeastern states: Assam, Meghalaya, Tripura, and Mizoram (AMTM).
  • The Siliguri Corridor, colloquially known as the 'Chicken's Neck', is a narrow stretch of land in West Bengal measuring roughly 22 km wide at its narrowest point, connecting mainland India to the Northeast.
  • The Ten Degree Channel separates the Andaman Islands from the Nicobar Islands in the Bay of Bengal, lying along the 10°N latitude.
  • Lakshadweep is India's smallest Union Territory, consisting of 36 coral islands and atolls in the Arabian Sea, with Kavaratti serving as its administrative capital.
  • Indira Point, situated at the southern tip of Great Nicobar Island at latitude 6°45' N, is India's southernmost geographical point.
  • Saddle Peak (732 metres) in North Andaman is the highest mountain peak in the Andaman and Nicobar archipelago.
  • Barren Island in the Andaman Sea is India's and South Asia's only confirmed active volcano, having erupted most recently in 2017–2018.
  • The Duncan Passage is a strait in the Indian Ocean that separates South Andaman from Little Andaman.
  • Lakshadweep archipelago in the Arabian Sea consists of 36 coral islands and atolls, with Kavaratti serving as the administrative headquarters.
  • Nine Degree Channel separates the island of Minicoy from the main Lakshadweep archipelago, while Eight Degree Channel separates Minicoy from the Maldives.
  • Loktak Lake in Manipur is the largest freshwater lake in Northeast India, famous for its floating circular biomass islands known as 'Phumdis' and the Keibul Lamjao National Park.
  • Mawsynram and Cherrapunji (Sohra) on the southern slopes of the Khasi Hills in Meghalaya receive the highest average annual rainfall in the world.
  • The North Eastern Council (NEC) was established in 1971 under the North Eastern Council Act as a statutory regional planning body for the eight northeastern states, headquartered in Shillong.
  • Sikkim was formally inducted as the eighth member state of the North Eastern Council in 2002, joining the original seven sister states.
  • The Sixth Schedule creates Autonomous District Councils (ADCs) and Regional Councils with legislative, judicial, and executive powers over land, forests, and customary law.
  • Bodoland Territorial Council (BTC), Karbi Anglong Autonomous Council, and Dima Hasao Autonomous District Council are Sixth Schedule bodies in Assam.
  • Article 371A provides special constitutional safeguards to Nagaland, restricting parliamentary legislation regarding Naga religious practices, customary laws, and land ownership without State Assembly consent.
  • Article 371G grants special protective provisions for the customary laws and land ownership rights of the Mizo tribal population in Mizoram.
  • Kaziranga National Park in Assam, located along the Brahmaputra River, hosts two-thirds of the world's great one-horned rhinoceros population and is a UNESCO World Heritage Site.
  • Majuli, situated on the Brahmaputra River in Assam, was declared India's first island district in 2016 and is the world's largest inhabited riverine island.
  • The Great Nicobar Biosphere Reserve encompasses the Galathea National Park and Campbell Bay National Park, designated a UNESCO World Biosphere Reserve in 2013.
  • North Sentinel Island in the Andaman archipelago is home to the uncontacted Sentinelese tribe, protected under the Andaman and Nicobar Islands (Protection of Aboriginal Tribes) Regulation, 1956.
  • The Coco Channel separates North Andaman (Landfall Island) from the Coco Islands of Myanmar in the northern Bay of Bengal.
  • Agatti Island in Lakshadweep hosts the only commercial operational airport serving the Lakshadweep archipelago.
  • Hornbill Festival, celebrated annually from December 1 to 10 at the Kisama Heritage Village near Kohima, Nagaland, is known as the 'Festival of Festivals'.
  • The Northeast region of India comprises the 'Eight Sisters' (or Seven Sisters plus Sikkim): Assam, Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland, Tripura, and Sikkim.
  • The Northeast is connected to the rest of the Indian mainland through the narrow Siliguri Corridor in West Bengal, popularly known as the 'Chicken's Neck', which narrows to just 21-22 kilometres at its narrowest point.
  • The North Eastern Council (NEC) was established in 1971 under the North Eastern Council Act, 1971, as the statutory regional planning body headquartered in Shillong, Meghalaya.
  • The Union Home Minister serves as the ex-officio Chairman of the North Eastern Council, with the Minister of State (Independent Charge) for the Ministry of DoNER serving as Vice-Chairman.
  • The Ministry of Development of North Eastern Region (DoNER) was created in September 2001 and elevated to a full-fledged Union Cabinet Ministry in May 2004.
  • The Sixth Schedule of the Constitution (Articles 244(2) and 275(1)) provides special administrative autonomy for tribal areas in four northeastern states—Assam, Meghalaya, Tripura, and Mizoram (AMTM)—through 10 Autonomous District Councils (ADCs).
  • The Bodoland Territorial Council (BTC), Karbi Anglong Autonomous Council (KAAC), and Dima Hasao Autonomous Council administer Sixth Schedule tribal areas in Assam.
  • The Inner Line Permit (ILP) is a travel document issued under the Bengal Eastern Frontier Regulation, 1873, mandatory for domestic Indian citizens visiting Arunachal Pradesh, Nagaland, Mizoram, and Manipur.
  • Majuli on the Brahmaputra River in Assam is recognized by Guinness World Records as the world's largest inhabited river island, and became India's first complete island district in September 2016.
  • Loktak Lake in Bishnupur district of Manipur is the largest natural freshwater lake in Northeast India, famous for its floating biomass vegetation called 'phumdis'.
  • Keibul Lamjao National Park, situated on Loktak Lake in Manipur, is the world's only floating national park and the sole natural habitat of the endangered Eld's deer or Sangai (brow-antlered deer).
  • Mawsynram in the East Khasi Hills district of Meghalaya is the wettest place on Earth, receiving an average annual rainfall of approximately 11,872 millimetres.
  • Living Root Bridges (Jingkieng Jri), hand-crafted by the indigenous Khasi and Jaintia tribes from the aerial roots of Ficus elastica (Indian rubber fig) trees across Meghalaya, are included in India's tentative list of UNESCO World Heritage Sites.
  • The Hornbill Festival, celebrated annually from 1 to 10 December at the Naga Heritage Village in Kisama near Kohima, is known as the 'Festival of Festivals' showcasing the rich tribal culture of Nagaland.
  • The Andaman and Nicobar Islands is an archipelago of 572 islands in the Bay of Bengal, spanning an area of 8,249 sq km with its administrative capital at Port Blair (Sri Vijaya Puram).
  • The Ten Degree Channel (10° N latitude) is a 150-kilometre wide oceanic passage separating the Andaman Islands group in the north from the Nicobar Islands group in the south.
  • The Duncan Passage is a marine strait in the Indian Ocean that separates South Andaman Island from Little Andaman Island.
  • Indira Point (formerly Pygmalion Point or Parsons Point), located at 6°45' N latitude on Great Nicobar Island, is the southernmost geographic point of the Republic of India.
  • Barren Island, situated about 135 km northeast of Port Blair in the Andaman Sea, is the only confirmed active volcano in the entire South Asian region.
  • Narcondam Island in the Andaman Sea is an isolated volcanic island classified as a dormant volcanic cone, known as the exclusive home of the endangered Narcondam Hornbill.
  • The Cellular Jail in Port Blair, completed by the British colonial administration in 1906, was designed as a seven-winged radial panopticon prison where Indian freedom fighters were exiled to serve 'Kala Pani'.
  • Particularly Vulnerable Tribal Groups (PVTGs) native to the Andaman and Nicobar Islands include the Great Andamanese, Onge, Jarawa, Sentinelese, and Shompen.
  • Lakshadweep is a uni-district Union Territory in the Arabian Sea consisting of 36 coral islands, atolls, and submerged sand banks covering 32.62 sq km, with its capital at Kavaratti.
  • The Nine Degree Channel (9° N latitude) separates the isolated island of Minicoy from the main northern Lakshadweep archipelago (Laccadive and Amindivi groups).
  • The Eight Degree Channel (8° N latitude) forms the international maritime boundary separating the southernmost Indian island of Minicoy from the Republic of Maldives.
Curriculum & Reference Sources: North Eastern Council (NEC), Ministry of Development of North Eastern Region (MDoNER), Census of India, and Survey of India.

Sample Solved Questions & Concept Explanations

8 Verified Concept Questions
Q1.HARD

Under the North-Eastern Areas (Reorganisation) Act, 1971, which two former Union Territories were granted full statehood alongside the creation of Meghalaya on 21 January 1972?

Q2.EASY

What is the capital of the northeastern state of Nagaland?

Q3.EASY

Which narrow geographical corridor in West Bengal connects the northeastern states with the rest of mainland India?

Q4.EASY

Which is the only active volcano in India (and South Asia), located in the Andaman Sea?

Q5.EASY

What is the capital of the northeastern state of Arunachal Pradesh?

Q6.EASY

Which water channel separates the Andaman Islands group from the Nicobar Islands group?

Q7.EASY

What is the capital city of Mizoram?

Q8.MEDIUM

Which is the highest peak in the Andaman and Nicobar archipelago, located in North Andaman Island?