Question: What amendment made the state that contains Nathula Pass an integral part of India?

full_context: Document 1: History of Goa: India made many requisitions to the Salazar regime of Portugal to grant their Indian colonies independence, but when that failed, on 18 December 1961, Indian troops crossed the border into Goa and ``liberated ''it. Operation Vijay involved sustained land, sea and air strikes for more than thirty - six hours; it resulted in the unconditional surrender of Portuguese forces on 19 December. A United Nations resolution`` condemning'' the invasion was proposed by the United States and the United Kingdom in the United Nations Security Council, but would be vetoed by the USSR. The territory of Goa was under military rule for five months. However, the previous civil service was soon restored. Goan voters went to the polls in a referendum and voted to become an autonomous, federally administered territory. Goa was later admitted Indian statehood in 1987. Goa celebrates ``Liberation Day ''on 19 December every year, which is also a state holiday.
Document 2: Nathu La: Nathu La (Devanagari नाथू ला; Tibetan: རྣ ་ ཐོས ་ ལ ་, IAST: Nāthū Lā, Chinese: 乃堆拉山口; pinyin: Nǎiduīlā Shānkǒu) is a mountain pass in the Himalayas. It connects the Indian state of Sikkim with China's Tibet Autonomous Region. The pass, at 4,310 m (14,140 ft) above mean sea level, forms a part of an offshoot of the ancient Silk Road. Nathu means ``listening ears ''and La means`` pass'' in Tibetan. On the Indian side, the pass is 54 km (34 mi) east of Gangtok, the capital of Sikkim. Only citizens of India can visit the pass, and then only after obtaining a permit in Gangtok.
Document 3: Daulat Beg Oldi: Daulat Beg Oldi (also Oldie, DBO), Ladakh, state of Jammu and Kashmir, India is a historic camp site and current military base located on an ancient trade route connecting Ladakh to the Tarim Basin. The Chip Chap River flows just to the south of Daulat Beg Oldi from east to west. Daulat Beg Oldie also has an airstrip at an altitude of 5065 meters (16,614 feet), which is the world's highest airstrip.
Document 4: Hyderabad: After India gained independence, the Nizam declared his intention to remain independent rather than become part of the Indian Union. The Hyderabad State Congress, with the support of the Indian National Congress and the Communist Party of India, began agitating against Nizam VII in 1948. On 17 September that year, the Indian Army took control of Hyderabad State after an invasion codenamed Operation Polo. With the defeat of his forces, Nizam VII capitulated to the Indian Union by signing an Instrument of Accession, which made him the Rajpramukh (Princely Governor) of the state until 31 October 1956. Between 1946 and 1951, the Communist Party of India fomented the Telangana uprising against the feudal lords of the Telangana region. The Constitution of India, which became effective on 26 January 1950, made Hyderabad State one of the part B states of India, with Hyderabad city continuing to be the capital. In his 1955 report Thoughts on Linguistic States, B. R. Ambedkar, then chairman of the Drafting Committee of the Indian Constitution, proposed designating the city of Hyderabad as the second capital of India because of its amenities and strategic central location. Since 1956, the Rashtrapati Nilayam in Hyderabad has been the second official residence and business office of the President of India; the President stays once a year in winter and conducts official business particularly relating to Southern India.
Document 5: Sengge-La: The Sengge-La is a mountain of around 4700 metres in the Zanskar region in the state of Ladakh in Jammu and Kashmir in northern India.
Document 6: Gangtok: Gangtok rose to prominence as a popular Buddhist pilgrimage site after the construction of the Enchey Monastery in 1840. In 1894, the ruling Sikkimese Chogyal, Thutob Namgyal, transferred the capital to Gangtok. In the early 20th century, Gangtok became a major stopover on the trade route between Lhasa in Tibet and cities such as Kolkata (then Calcutta) in British India. After India won its independence from Britain in 1947, Sikkim chose to remain an independent monarchy, with Gangtok as its capital. In 1975, after the integration with the union of India, Gangtok was made India's 22nd state capital.
Document 7: Mizoram: Like several other northeastern states of India, Mizoram was previously part of Assam until 1972, when it was carved out as a Union Territory. It became the 23rd state of India, a step above Union Territory, on 20 February 1987, with Fifty - Third Amendment of Indian Constitution, 1986.
Document 8: Khyber Pass: The Khyber Pass (Pashto: د خیبر درہ ‎, Urdu: درۂ خیبر ‬ ‎) (elevation: 1,070 m or 3,510 ft) is a mountain pass in the north of Pakistan, close to the border with Afghanistan. It connects the town of Landi Kotal to the Valley of Peshawar at Jamrud by traversing part of the Spin Ghar mountains. An integral part of the ancient Silk Road, it has long had substantial cultural, economic, and geopolitical significance for Eurasian trade. Throughout history it has been an important trade route between Central Asia and the Indian subcontinent and a strategic military location. The summit of the pass is 5 km (3.1 mi) inside Pakistan at Landi Kotal. The Khyber Pass is part of the Asian Highway 1 (AH1).
Document 9: Himachal Pradesh: The Gurkhas, a martial tribe, came to power in Nepal in the year 1768. They consolidated their military power and began to expand their territory. Gradually, the Gorkhas annexed Sirmour and Shimla. With the leadership of Amar Singh Thapa, Gorkhas laid siege to Kangra. They managed to defeat Sansar Chand Katoch, the ruler of Kangra, in 1806 with the help of many provincial chiefs. However, Gurkhas could not capture Kangra fort which came under Maharaja Ranjeet Singh in 1809. After the defeat, the Gurkhas began to expand towards the south of the state. However, Raja Ram Singh, Raja of Siba State managed to capture the fort of Siba from the remnants of Lahore Darbar in Samvat 1846, during the First Anglo-Sikh War. They came into direct conflict with the British along the tarai belt after which the British expelled them from the provinces of the Satluj. The British gradually emerged as the paramount power. In the revolt of 1857, or first Indian war of independence, arising from a number of grievances against the British, the people of the hill states were not as politically active as were those in other parts of the country. They and their rulers, with the exception of Bushahr, remained more or less inactive. Some, including the rulers of Chamba, Bilaspur, Bhagal and Dhami, rendered help to the British government during the revolt.
Document 10: Mount Everest: Mount Everest, known in Nepali as Sagarmatha (सगरमाथा) and in Tibetan as Chomolungma (ཇོ ་ མོ ་ གླང ་ མ), is Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas. The international border between Nepal (Province No. 1) and China (Tibet Autonomous Region) runs across its summit point.
Document 11: Sikkim: Phuntsog Namgyal was succeeded in 1670 by his son, Tensung Namgyal, who moved the capital from Yuksom to Rabdentse (near modern Pelling). In 1700, Sikkim was invaded by the Bhutanese with the help of the half-sister of the Chogyal, who had been denied the throne. The Bhutanese were driven away by the Tibetans, who restored the throne to the Chogyal ten years later. Between 1717 and 1733, the kingdom faced many raids by the Nepalese in the west and Bhutanese in the east, culminating with the destruction of the capital Rabdentse by the Nepalese. In 1791, China sent troops to support Sikkim and defend Tibet against the Gorkha Kingdom. Following the subsequent defeat of Gorkha, the Chinese Qing dynasty established control over Sikkim.
Document 12: Sikkim: In 1975, the Prime Minister of Sikkim appealed to the Indian Parliament for Sikkim to become a state of India. In April of that year, the Indian Army took over the city of Gangtok and disarmed the Chogyal's palace guards. Thereafter, a referendum was held in which 97.5 per cent of voters supported abolishing the monarchy, effectively approving union with India. India is said to have stationed 20,000 -- 40,000 troops in a country of only 200,000 during the referendum. On 16 May 1975, Sikkim became the 22nd state of the Indian Union, and the monarchy was abolished. To enable the incorporation of the new state, the Indian Parliament amended the Indian Constitution. First, the 35th Amendment laid down a set of conditions that made Sikkim an ``Associate State '', a special designation not used by any other state. A month later, the 36th Amendment repealed the 35th Amendment, and made Sikkim a full state, adding its name to the First Schedule of the Constitution.
Document 13: Rohtang Pass: Rohtang Pass () (Bhoti: རོ་ཐང་། Rohtang , lit: རོ་ (Ro)- corpse, ཐང་། (thang)- plain/field due to people working in CBRE dying in bad weather trying to cross the pass) (elevation ), is a high mountain pass on the eastern Pir Panjal Range of the Himalayas around from Manali. It connects the Kullu Valley with the Lahaul and Spiti Valleys of Himachal Pradesh, India.
Document 14: Tibet: The Indus and Brahmaputra rivers originate from a lake (Tib: Tso Mapham) in Western Tibet, near Mount Kailash. The mountain is a holy pilgrimage site for both Hindus and Tibetans. The Hindus consider the mountain to be the abode of Lord Shiva. The Tibetan name for Mt. Kailash is Khang Rinpoche. Tibet has numerous high-altitude lakes referred to in Tibetan as tso or co. These include Qinghai Lake, Lake Manasarovar, Namtso, Pangong Tso, Yamdrok Lake, Siling Co, Lhamo La-tso, Lumajangdong Co, Lake Puma Yumco, Lake Paiku, Lake Rakshastal, Dagze Co and Dong Co. The Qinghai Lake (Koko Nor) is the largest lake in the People's Republic of China.
Document 15: Sikkim (film): Sikkim is a 1971 Indian documentary about the nation of Sikkim, directed by Satyajit Ray. The documentary was commissioned by the Chogyal (King) of Sikkim at a time when he felt the sovereignty of Sikkim was under threat from both China and India. Ray's documentary is about the sovereignty of Sikkim. The film was banned by the government of India, when Sikkim merged with India in 1975. In 2000, the copyright of the film was transferred to the Art and Culture Trust of Sikkim. The ban was finally lifted by the Ministry of External Affairs (MEA) in September 2010. In November 2010 the director of the Kolkata film festival stated that upon screening the documentary for the first time, he received an injunction from the court of Sikkim again banning the film.
ground_truth: the 36th Amendment
sub_queries: nathula pass is located in which state of india Answer: Sikkim
Sikkim was made an integral part of india under which amendment Answer: the 36th Amendment