paragraph_text: "Bitter Heart" is a single by British new wave group Seona Dancing, released in 1983. It is a David Bowie-style new wave pop song, sung by a then-unknown Ricky Gervais with synthesizers provided by Bill Macrae. The song was virtually unknown in their homeland of the UK, after only peaking at #79 on the UK Singles Chart, even though it remained in the Top 100 for 3 weeks.

paragraph_text: "Little Arrows" is a single by English artist Leapy Lee. Released in 1968, it was the first single from his album "Little Arrows". The song peaked at number 2 in his homeland, number 11 on the "Billboard" Hot Country Singles chart. It also reached number 1 on the "RPM" Country Tracks chart in Canada.

paragraph_text: The majority of the province's population is Han Chinese, who are found scattered throughout the region with the exception of the far western areas. Thus, significant minorities of Tibetan, Yi, Qiang and Nakhi people reside in the western portion that are impacted by inclement weather and natural disasters, environmentally fragile, and impoverished. Sichuan's capital of Chengdu is home to a large community of Tibetans, with 30,000 permanent Tibetan residents and up to 200,000 Tibetan floating population. The Eastern Lipo, included with either the Yi or the Lisu people, as well as the A-Hmao, also are among the ethnic groups of the provinces.

paragraph_text: Tibet (i/tᵻˈbɛt/; Wylie: Bod, pronounced [pʰø̀ʔ]; Chinese: 西藏; pinyin: Xīzàng) is a region on the Tibetan Plateau in Asia. It is the traditional homeland of the Tibetan people as well as some other ethnic groups such as Monpa, Qiang and Lhoba peoples and is now also inhabited by considerable numbers of Han Chinese and Hui people. Tibet is the highest region on Earth, with an average elevation of 4,900 metres (16,000 ft). The highest elevation in Tibet is Mount Everest, earth's highest mountain rising 8,848 m (29,029 ft) above sea level.

paragraph_text: Historically, the population of Tibet consisted of primarily ethnic Tibetans and some other ethnic groups. According to tradition the original ancestors of the Tibetan people, as represented by the six red bands in the Tibetan flag, are: the Se, Mu, Dong, Tong, Dru and Ra. Other traditional ethnic groups with significant population or with the majority of the ethnic group residing in Tibet (excluding a disputed area with India) include Bai people, Blang, Bonan, Dongxiang, Han, Hui people, Lhoba, Lisu people, Miao, Mongols, Monguor (Tu people), Menba (Monpa), Mosuo, Nakhi, Qiang, Nu people, Pumi, Salar, and Yi people.

paragraph_text: Before Europeans arrived, the Philadelphia area was home to the Lenape (Delaware) Indians in the village of Shackamaxon. The Lenape are a Native American tribe and First Nations band government. They are also called Delaware Indians and their historical territory was along the Delaware River watershed, western Long Island and the Lower Hudson Valley.[a] Most Lenape were pushed out of their Delaware homeland during the 18th century by expanding European colonies, exacerbated by losses from intertribal conflicts. Lenape communities were weakened by newly introduced diseases, mainly smallpox, and violent conflict with Europeans. Iroquois people occasionally fought the Lenape. Surviving Lenape moved west into the upper Ohio River basin. The American Revolutionary War and United States' independence pushed them further west. In the 1860s, the United States government sent most Lenape remaining in the eastern United States to the Indian Territory (present-day Oklahoma and surrounding territory) under the Indian removal policy. In the 21st century, most Lenape now reside in the US state of Oklahoma, with some communities living also in Wisconsin, Ontario (Canada) and in their traditional homelands.

paragraph_text: In 711, troops mostly formed by Moors from North Africa led the Umayyad conquest of Hispania. The Iberian peninsula then came to be known in classical Arabic as Al - Andalus, which at its peak included most of Septimania and modern - day Spain and Portugal.

paragraph_text: In 121 BC, Han forces expelled the Xiongnu from a vast territory spanning the Hexi Corridor to Lop Nur. They repelled a joint Xiongnu-Qiang invasion of this northwestern territory in 111 BC. In that year, the Han court established four new frontier commanderies in this region: Jiuquan, Zhangyi, Dunhuang, and Wuwei. The majority of people on the frontier were soldiers. On occasion, the court forcibly moved peasant farmers to new frontier settlements, along with government-owned slaves and convicts who performed hard labor. The court also encouraged commoners, such as farmers, merchants, landowners, and hired laborers, to voluntarily migrate to the frontier.

paragraph_text: Long a major population center and site of worldwide automobile manufacturing, Detroit has suffered a long economic decline produced by numerous factors. Like many industrial American cities, Detroit reached its population peak in the 1950 census. The peak population was 1.8 million people. Following suburbanization, industrial restructuring, and loss of jobs (as described above), by the 2010 census, the city had less than 40 percent of that number, with just over 700,000 residents. The city has declined in population in each census since 1950.

paragraph_text: Thaba 'Nchu is a town in Free State, South Africa, located 60 km east of Bloemfontein and 17km east of Botshabelo. The population is largely made up of Tswana and Sotho people. The town was settled in the 1830s and officially established in 1873. The town grew larger following the 1913 Natives' Land Act that stated Thaba 'Nchu as a homeland for Tswana people. It was known among the Voortrekkers as Blesberg (blazed mountain, bald mountain).

paragraph_text: Tajikistan (i/tɑːˈdʒiːkᵻstɑːn/, /təˈdʒiːkᵻstæn/, or /tæˈdʒiːkiːstæn/; Persian: تاجيكستان‎‎ Тоҷикистон [tɔd͡ʒikɪsˈtɔn]), officially the Republic of Tajikistan (Persian: جمهورى تاجيكستان‎‎ Tajik: Ҷумҳурии Тоҷикистон, Çumhuriji Toçikiston/Jumhuriyi Tojikiston; Russian: Респу́блика Таджикистан, Respublika Tadzhikistan), is a mountainous, landlocked country in Central Asia with an estimated 8 million people in 2013, and an area of 143,100 km2 (55,300 sq mi). It is bordered by Afghanistan to the south, Uzbekistan to the west, Kyrgyzstan to the north, and China to the east. Pakistan lies to the south, separated by the narrow Wakhan Corridor. Traditional homelands of Tajik people included present-day Tajikistan, Afghanistan and Uzbekistan.

paragraph_text: Conflict between the Germanic tribes and the forces of Rome under Julius Caesar forced major Germanic tribes to retreat to the east bank of the Rhine. Roman emperor Augustus in 12 BC ordered the conquest of the Germans, but the catastrophic Roman defeat at the Battle of the Teutoburg Forest resulted in the Roman Empire abandoning its plans to completely conquer Germany. Germanic peoples in Roman territory were culturally Romanized, and although much of Germany remained free of direct Roman rule, Rome deeply influenced the development of German society, especially the adoption of Christianity by the Germans who obtained it from the Romans. In Roman-held territories with Germanic populations, the Germanic and Roman peoples intermarried, and Roman, Germanic, and Christian traditions intermingled. The adoption of Christianity would later become a major influence in the development of a common German identity.

paragraph_text: From their original homelands in Scandinavia and northern Europe, Germanic tribes expanded throughout northern and western Europe in the middle period of classical antiquity; southern Europe in late antiquity, conquering Celtic and other peoples; and by 800 CE, forming the Holy Roman Empire, the first German Empire. However, there was no real systemic continuity from the Western Roman Empire to its German successor which was famously described as "not holy, not Roman, and not an empire", as a great number of small states and principalities existed in the loosely autonomous confederation. Although by 1000 CE, the Germanic conquest of central, western, and southern Europe (west of and including Italy) was complete, excluding only Muslim Iberia. There was, however, little cultural integration or national identity, and "Germany" remained largely a conceptual term referring to an amorphous area of central Europe.

paragraph_text: United States Secretary of Homeland Security Seal of the Department of Homeland Security Flag of the Secretary of Homeland Security Incumbent Kirstjen Nielsen since December 6, 2017 United States Department of Homeland Security Style Madam Secretary Member of Cabinet Homeland Security Council Reports to President of the United States Seat Washington, D.C. Appointer The President with Senate advice and consent Term length No fixed term Constituting instrument 6 U.S.C. § 112 Formation January 24, 2003 (15 years ago) (2003 - 01 - 24) First holder Tom Ridge Succession Eighteenth Deputy Deputy Secretary of Homeland Security Salary Executive Schedule, level 1 Website www.dhs.gov

paragraph_text: In the Netherlands the Serious Request broadcasts and the Glass House have become a national December tradition, that reaches most of the national population. The 2012 edition was watched and listened to by 12.1 million people over the age of ten, or 84% of Dutch people in that age group. Overall, 88% of the people were aware of the event.

paragraph_text: Garzê Tibetan Autonomous Prefecture and Ngawa Tibetan and Qiang Autonomous Prefecture in western Sichuan are populated by Tibetans and Qiang people. Tibetans speak the Khams and Amdo Tibetan, which are Tibetic languages, as well as various Qiangic languages. The Qiang speak Qiangic languages and often Tibetic languages as well. The Yi people of Liangshan Yi Autonomous Prefecture in southern Sichuan speak the Nuosu language, which is one of the Lolo-Burmese languages; Yi is written using the Yi script, a syllabary standardized in 1974. The Southwest University for Nationalities has one of China's most prominent Tibetology departments, and the Southwest Minorities Publishing House prints literature in minority languages. In the minority inhabited regions of Sichuan, there is bi-lingual signage and public school instruction in non-Mandarin minority languages.

paragraph_text: Kolmaš writes that, as the Mongol presence in Tibet increased, culminating in the conquest of Tibet by a Mongol leader in 1642, the Ming emperors "viewed with apparent unconcern these developments in Tibet." He adds that the Ming court's lack of concern for Tibet was one of the reasons why the Mongols pounced on the chance to reclaim their old vassal of Tibet and "fill once more the political vacuum in that country." On the mass Mongol conversion to Tibetan Buddhism under Altan Khan, Laird writes that "the Chinese watched these developments with interest, though few Chinese ever became devout Tibetan Buddhists."

paragraph_text: The Later Qin (; 384–417), also known as Yao Qin (), was a state of Qiang ethnicity of the Sixteen Kingdoms during the Jin dynasty (265–420) in China. The Later Qin is entirely distinct from the Qin dynasty, the Former Qin and the Western Qin.

paragraph_text: Peak Crossing is a locality split between the City of Ipswich and the Scenic Rim Region of Queensland, Australia. In the 2011 census, Peak Crossing had a population of 768 people.

paragraph_text: Kelupis (which literally translates to 'glutinous rice rolls' in English) is a traditional kuih for the Bruneian Malay people in the country of Brunei and in the states of Sabah and Sarawak in Malaysia. It is also a traditional snack for the Bisaya people as the three ethnics are ethnically related which is Lun Bawang/Lundayeh also create this kelupis especially on the wedding ceremony.

Question: When did the conquest of the traditional homeland of Monpa, Qiang, and Lhoba peoples reach its peak?
Answer: 1642