Question: When did the region where Nawang Khechog was born become part of Qing China?

full_context: Document 1: Arunachal Pradesh: The NEFA (North-East Frontier Agency) was created in 1954. The issue was quiet for nearly a decade, with a period of cordial Sino-Indian relations, but its resurgence in 1960 was a factor leading to the Sino-Indian border conflict of 1962. During the war in 1962, China captured most of the area of Arunachal Pradesh. However, China soon declared victory, withdrew back to the McMahon Line and returned Indian prisoners of war in 1963. It is believed by some commentators that Mao wanted to intimidate India for its continued support of the Dalai Lama, and for its stance on Tibet being an independent state and not a Chinese territory. There was a significant influx of Tibetan refugees into India, primarily to Dharamshala in North India.
Document 2: Tibet: After the Dalai Lama's government fled to Dharamsala, India, during the 1959 Tibetan Rebellion, it established a rival government-in-exile. Afterwards, the Central People's Government in Beijing renounced the agreement and began implementation of the halted social and political reforms. During the Great Leap Forward, between 200,000 and 1,000,000 Tibetans died, and approximately 6,000 monasteries were destroyed during the Cultural Revolution. In 1962 China and India fought a brief war over the disputed South Tibet and Aksai Chin regions. Although China won the war, Chinese troops withdrew north of the McMahon Line, effectively ceding South Tibet to India.
Document 3: Dorji Wangchuk: Between 1992 and 1996, he taught Tibetan Buddhist monks and nuns in monastic seminaries in India. Since 1998, he has been teaching and researching at the University of Hamburg in various capacities. He also taught a term each at the University of Copenhagen, McGill University, and Renmin University of China. Currently he is a professor for Tibetology (“Tibetan (Buddhist) Studies”) at the Department of Indian and Tibetan Studies, Asien-Afrika-Institut, Universität Hamburg. He is also the founder and director of the Khyentse Center for Tibetan Buddhist Textual Scholarship (KC-TBTS), a research center within the Department of Indian and Tibetan Studies, Asien-Afrika-Institut, Universität Hamburg.
Document 4: Tibet: Qing dynasty rule in Tibet began with their 1720 expedition to the country when they expelled the invading Dzungars. Amdo came under Qing control in 1724, and eastern Kham was incorporated into neighbouring Chinese provinces in 1728. Meanwhile, the Qing government sent resident commissioners called Ambans to Lhasa. In 1750 the Ambans and the majority of the Han Chinese and Manchus living in Lhasa were killed in a riot, and Qing troops arrived quickly and suppressed the rebels in the next year. Like the preceding Yuan dynasty, the Manchus of the Qing dynasty exerted military and administrative control of the region, while granting it a degree of political autonomy. The Qing commander publicly executed a number of supporters of the rebels and, as in 1723 and 1728, made changes in the political structure and drew up a formal organization plan. The Qing now restored the Dalai Lama as ruler, leading the governing council called Kashag, but elevated the role of Ambans to include more direct involvement in Tibetan internal affairs. At the same time the Qing took steps to counterbalance the power of the aristocracy by adding officials recruited from the clergy to key posts.
Document 5: Nanwu Si Monastery: Nanwu Si Monastery is a Tibetan Buddhist monastery west of the town of Kangding in Kangding County of the Garzê Tibetan Autonomous Prefecture, in Sichuan Province, southwestern China.
Document 6: Nawang Khechog: Nawang was born in Tibet, but following the Chinese invasion of 1949/1950, his family moved to India, where Nawang studied meditation and Buddhist philosophy. He spent eleven years as a monk, including four years as a hermit meditating in the Himalayan foothills under the guidance of the Dalai Lama.
Document 7: Qing dynasty: China also began suffering from mounting overpopulation during this period. Population growth was stagnant for the first half of the 17th century due to civil wars and epidemics, but prosperity and internal stability gradually reversed this trend. The introduction of new crops from the Americas such as the potato and peanut allowed an improved food supply as well, so that the total population of China during the 18th century ballooned from 100 million to 300 million people. Soon all available farmland was used up, forcing peasants to work ever-smaller and more intensely worked plots. The Qianlong Emperor once bemoaned the country's situation by remarking "The population continues to grow, but the land does not." The only remaining part of the empire that had arable farmland was Manchuria, where the provinces of Jilin and Heilongjiang had been walled off as a Manchu homeland. The emperor decreed for the first time that Han Chinese civilians were forbidden to settle. Mongols were forbidden by the Qing from crossing the borders of their banners, even into other Mongol Banners and from crossing into neidi (the Han Chinese 18 provinces) and were given serious punishments if they did in order to keep the Mongols divided against each other to benefit the Qing.
Document 8: Qing dynasty: By the mid-18th century, the Qing had successfully put outer regions such as Inner and Outer Mongolia, Tibet and Xinjiang under its control. Imperial commissioners and garrisons were sent to Mongolia and Tibet to oversee their affairs. These territories were also under supervision of a central government institution called Lifan Yuan. Qinghai was also put under direct control of the Qing court. Xinjiang, also known as Chinese Turkestan, was subdivided into the regions north and south of the Tian Shan mountains, also known today as Dzungaria and Tarim Basin respectively, but the post of Ili General was established in 1762 to exercise unified military and administrative jurisdiction over both regions. Dzungaria was fully opened to Han migration by the Qianlong Emperor from the beginning. Han migrants were at first forbidden from permanently settling in the Tarim Basin but were the ban was lifted after the invasion by Jahangir Khoja in the 1820s. Likewise, Manchuria was also governed by military generals until its division into provinces, though some areas of Xinjiang and Northeast China were lost to the Russian Empire in the mid-19th century. Manchuria was originally separated from China proper by the Inner Willow Palisade, a ditch and embankment planted with willows intended to restrict the movement of the Han Chinese, as the area was off-limits to civilian Han Chinese until the government started colonizing the area, especially since the 1860s.
Document 9: Kathmandu: Legendary Princess Bhrikuti (7th-century) and artist Araniko (1245 - 1306 AD) from that tradition of Kathmandu valley played a significant role in spreading Buddhism in Tibet and China. There are over 108 traditional monasteries (Bahals and Bahis) in Kathmandu based on Newar Buddhism. Since the 1960s, the permanent Tibetan Buddhist population of Kathmandu has risen significantly so that there are now over fifty Tibetan Buddhist monasteries in the area. Also, with the modernization of Newar Buddhism, various Theravada Bihars have been established.
Document 10: Tibet: Muslims have been living in Tibet since as early as the 8th or 9th century. In Tibetan cities, there are small communities of Muslims, known as Kachee (Kache), who trace their origin to immigrants from three main regions: Kashmir (Kachee Yul in ancient Tibetan), Ladakh and the Central Asian Turkic countries. Islamic influence in Tibet also came from Persia. After 1959 a group of Tibetan Muslims made a case for Indian nationality based on their historic roots to Kashmir and the Indian government declared all Tibetan Muslims Indian citizens later on that year. Other Muslim ethnic groups who have long inhabited Tibet include Hui, Salar, Dongxiang and Bonan. There is also a well established Chinese Muslim community (gya kachee), which traces its ancestry back to the Hui ethnic group of China.
Document 11: Qing dynasty: With respect to these outer regions, the Qing maintained imperial control, with the emperor acting as Mongol khan, patron of Tibetan Buddhism and protector of Muslims. However, Qing policy changed with the establishment of Xinjiang province in 1884. During The Great Game era, taking advantage of the Dungan revolt in northwest China, Yaqub Beg invaded Xinjiang from Central Asia with support from the British Empire, and made himself the ruler of the kingdom of Kashgaria. The Qing court sent forces to defeat Yaqub Beg and Xinjiang was reconquered, and then the political system of China proper was formally applied onto Xinjiang. The Kumul Khanate, which was incorporated into the Qing empire as a vassal after helping Qing defeat the Zunghars in 1757, maintained its status after Xinjiang turned into a province through the end of the dynasty in the Xinhai Revolution up until 1930. In early 20th century, Britain sent an expedition force to Tibet and forced Tibetans to sign a treaty. The Qing court responded by asserting Chinese sovereignty over Tibet, resulting in the 1906 Anglo-Chinese Convention signed between Britain and China. The British agreed not to annex Tibetan territory or to interfere in the administration of Tibet, while China engaged not to permit any other foreign state to interfere with the territory or internal administration of Tibet. Furthermore, similar to Xinjiang which was converted into a province earlier, the Qing government also turned Manchuria into three provinces in the early 20th century, officially known as the "Three Northeast Provinces", and established the post of Viceroy of the Three Northeast Provinces to oversee these provinces, making the total number of regional viceroys to nine.
Document 12: Tibet: Religion is extremely important to the Tibetans and has a strong influence over all aspects of their lives. Bön is the ancient religion of Tibet, but has been almost eclipsed by Tibetan Buddhism, a distinctive form of Mahayana and Vajrayana, which was introduced into Tibet from the Sanskrit Buddhist tradition of northern India. Tibetan Buddhism is practiced not only in Tibet but also in Mongolia, parts of northern India, the Buryat Republic, the Tuva Republic, and in the Republic of Kalmykia and some other parts of China. During China's Cultural Revolution, nearly all Tibet's monasteries were ransacked and destroyed by the Red Guards. A few monasteries have begun to rebuild since the 1980s (with limited support from the Chinese government) and greater religious freedom has been granted – although it is still limited. Monks returned to monasteries across Tibet and monastic education resumed even though the number of monks imposed is strictly limited. Before the 1950s, between 10 and 20% of males in Tibet were monks.
Document 13: Qing dynasty: Qing China reached its largest extent during the 18th century, when it ruled China proper (eighteen provinces) as well as the areas of present-day Northeast China, Inner Mongolia, Outer Mongolia, Xinjiang and Tibet, at approximately 13 million km2 in size. There were originally 18 provinces, all of which in China proper, but later this number was increased to 22, with Manchuria and Xinjiang being divided or turned into provinces. Taiwan, originally part of Fujian province, became a province of its own in the late 19th century, but was ceded to the Empire of Japan in 1895 following the First Sino-Japanese War. In addition, many surrounding countries, such as Korea (Joseon dynasty), Vietnam frequently paid tribute to China during much of this period. Khanate of Kokand were forced to submit as protectorate and pay tribute to the Qing dynasty in China between 1774 and 1798.
Document 14: Qing dynasty: In addition to the six boards, there was a Lifan Yuan unique to the Qing government. This institution was established to supervise the administration of Tibet and the Mongol lands. As the empire expanded, it took over administrative responsibility of all minority ethnic groups living in and around the empire, including early contacts with Russia — then seen as a tribute nation. The office had the status of a full ministry and was headed by officials of equal rank. However, appointees were at first restricted only to candidates of Manchu and Mongol ethnicity, until later open to Han Chinese as well.
Document 15: Qing dynasty: Han Chinese farmers were resettled from north China by the Qing to the area along the Liao River in order to restore the land to cultivation. Wasteland was reclaimed by Han Chinese squatters in addition to other Han who rented land from Manchu landlords. Despite officially prohibiting Han Chinese settlement on the Manchu and Mongol lands, by the 18th century the Qing decided to settle Han refugees from northern China who were suffering from famine, floods, and drought into Manchuria and Inner Mongolia so that Han Chinese farmed 500,000 hectares in Manchuria and tens of thousands of hectares in Inner Mongolia by the 1780s. Qianlong allowed Han Chinese peasants suffering from drought to move into Manchuria despite him issuing edicts in favor of banning them from 1740–1776. Chinese tenant farmers rented or even claimed title to land from the "imperial estates" and Manchu Bannerlands in the area. Besides moving into the Liao area in southern Manchuria, the path linking Jinzhou, Fengtian, Tieling, Changchun, Hulun, and Ningguta was settled by Han Chinese during the Qianlong Emperor's rule, and Han Chinese were the majority in urban areas of Manchuria by 1800. To increase the Imperial Treasury's revenue, the Qing sold formerly Manchu only lands along the Sungari to Han Chinese at the beginning of the Daoguang Emperor's reign, and Han Chinese filled up most of Manchuria's towns by the 1840s according to Abbe Huc.
ground_truth: mid-18th century
sub_queries: Nawang Khechog >> place of birth Answer: Tibet
When did Tibet become part of Qing China? Answer: mid-18th century