A viewset for viewing and editing Bridges.

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            "description": " Some of the infrastructure seen in Pueblito/Ciudad Perdida appears from 800 CE onwards. §REF§(Giraldo 2015, personal communication)§REF§",
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                "general_description": "The Nahuange or Neguanje phase of Colombian prehistory lasted from about 250 to 1050 CE, according to Santiago Giraldo and Juana Saenz's recent estimates based on radiocarbon-dated goldwork and complete dated contexts. §REF§ (Giraldo 2015, personal communication) §REF§  Nahuange artefacts and sites have mostly been found along Colombia's Atlantic coast. §REF§ (Bray 2003, 322-3) §REF§ <br><i>Population and political organization</i><br>Most likely, Nahuange communities were organized into numerous small polities. Unfortunately, there is not enough data to determine the exact relationship between these polities (e.g. if some dominated over others), though it is worth noting that individual polities were probably poorly integrated systems, with little centralization. §REF§ (Langebaek 2005, 87) §REF§  Similarly, little is known about Nahuange social hierarchies, §REF§ (Langebaek 2005, 117) §REF§  or, for that matter, about their population numbers. §REF§ (Langebaek 2005, 27) §REF§  §REF§ (Giraldo 2015, personal communication) §REF§ ",
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            "description": "“Yet, as this achievement became a reality, the definition of the ‘godly commonwealth’ itself was beginning to change, as more emphasis was put on good citizenship rather than on storming the heavens with prayer. ‘Building bridges, making roads’ is a ‘pious work’ as good as any other, commented Ponz at the end of the Old Regime, as he gave reference after reference to bishops setting up workshops, distributing spindles, wool and flax to the poor. He cited with approval the letter of the archbishop of Toledo to the priests of his diocese in 1779, urging them to take an interest in the material welfare of their parishioners.”<ref>(Casey 2002: 248) Casey, James. 2002. Early Modern Spain: A Social History. New York: Routledge. https://www.zotero.org/groups/seshat_databank/items/itemKey/2SNTRSWT</ref>",
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            "description": "The Soviet Union invested heavily in its road infrastructure, especially during the post-World War II era, to facilitate industrial growth, military movement, and improve connectivity across its vast territory.\r\nThe economic centralization of the late 1920s and 1930s led to massive and rapid infrastructure development.\r\n§REF§R. W. Davies, Mark Harrison, and S. G. Wheatcroft, eds., The Economic Transformation of the Soviet Union, 1913-1945 (Cambridge ; New York: Cambridge University Press, 1994).<a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/SQIKYBTN\" target=\"_blank\" class=\"fw-bolder\"> <b> Zotero link: SQIKYBTN</b></a>§REF§§REF§Шафиркин, Б. И. Единая Транспортная Система СССР и Взаимодействие Различных Видов Транспорта. Москва Высшая школа, 1983.<a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/6MTCGJDC\" target=\"_blank\" class=\"fw-bolder\"> <b> Zotero link: 6MTCGJDC</b></a>§REF§ \r\n\r\n\r\nExamples: Merefa-Kherson bridge, Bolshoy Kamenny Bridge, Saratov Bridge",
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                "general_description": "The Hepthalites were one group of a series of nomadic tribal confederations that are sometimes referred to as the White Huns. The evidence seems to indicate that they were a second wave of Hunnish migration. §REF§ <a class=\"external free\" href=\"http://en.unesco.org/silkroad/sites/silkroad/files/knowledgebankarticle/vol_III%20silk%20road_the%20hephthalite%20empire%20BIS.pdf\" rel=\"nofollow\">http://en.unesco.org/silkroad/sites/silkroad/files/knowledgebankarticle/vol_III%20silk%20road_the%20hephthalite%20empire%20BIS.pdf</a> p. 140  §REF§  Despite the name, some scholars think the White Huns were in fact not a Turkic people, but rather the easternmost group of Iranian nomads. §REF§  Docherty, Paddy. The Khyber Pass: a history of empire and invasion. Union Square Press, 2008. p. 105  §REF§ <br>At their peak territorial coverage the Hephthalite lands may have enclosed 26 million people but most subjects likely had a great deal of autonomy. As a nomadic confederation, the Hepthalites may not have possessed a central administration, although evidence indicates at least the adoption of local administrations for the purposes of exacting tribute. §REF§  encyclopedia iranica vol. XII, HAREM I - ILLUMINATIONISM, 2004. Fasc. 2, pp. 198-201  §REF§  During the peak of their power, they seem to have become increasingly sedentary, and this may have increased the degree of centralization. Coins show Hephthalites practiced skull deformation §REF§ (West 2009, 276) West, B A. 2009. Encyclopedia of the Peoples of Asia and Oceania. Infobase Publishing.  §REF§  which may provide indirect evidence for strong social hierarchy and status competition.<br>Commentators at the time differed in their opinions as to what the structure of the group was and to what degree they differed from the other nomadic peoples of the area. The Byzantian commentator Procopius of Caesarea stressed that, 'They are not nomadic like the other Hunnish peoples, but have long since settled on fertile land.' He further explained that unlike the other peoples of central asia, the Hepthalites were,'ruled by one king and possess a legal state structure, observing justice among themselves and with their neighbours in no lesser measure than the Byzantines and Persians.' §REF§ <a class=\"external free\" href=\"http://en.unesco.org/silkroad/sites/silkroad/files/knowledgebankarticle/vol_III%20silk%20road_the%20hephthalite%20empire%20BIS.pdf\" rel=\"nofollow\">http://en.unesco.org/silkroad/sites/silkroad/files/knowledgebankarticle/vol_III%20silk%20road_the%20hephthalite%20empire%20BIS.pdf</a> p. 140  §REF§ ",
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                "id": 470,
                "name": "CnHQngL",
                "start_year": 1701,
                "end_year": 1895,
                "long_name": "Hmong - Late Qing",
                "new_name": "cn_hmong_1",
                "polity_tag": "LEGACY",
                "general_description": "The Hmong are an agricultural people who have inhabited southern China for about 2000 years. §REF§ (Diamond 2009, 3) Diamond, Norma. 2009. “Culture Summary: Miao.” eHRAF World Cultures. <a class=\"external free\" href=\"http://ehrafworldcultures.yale.edu/document?id=ae05-000\" rel=\"nofollow\">http://ehrafworldcultures.yale.edu/document?id=ae05-000</a>. Seshat URL: <a class=\"external free\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/Z9NGT72X\" rel=\"nofollow\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/Z9NGT72X</a>. §REF§  Made up of several distinct cultures, they are also known as the Miao, an insulting term that loosely translates to 'barbarians' or 'bumpkins'. §REF§ (Fadiman 1997) Fadiman, Anne. 1997. The Spirit Catches You and You Fall Down: A Hmong Child, Her American Doctors, and the Collision of Two Cultures. New York: Farrar, Straus and Giroux. §REF§  The Qing Dynasty was marked by a series of Hmong uprisings, first in western Hunan from 1795 to 1806 CE, and then in Guizhou from 1854 to 1872. §REF§ (Diamond 2009, 3) Diamond, Norma. 2009. “Culture Summary: Miao.” eHRAF World Cultures. <a class=\"external free\" href=\"http://ehrafworldcultures.yale.edu/document?id=ae05-000\" rel=\"nofollow\">http://ehrafworldcultures.yale.edu/document?id=ae05-000</a>. Seshat URL: <a class=\"external free\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/Z9NGT72X\" rel=\"nofollow\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/Z9NGT72X</a>. §REF§ <br><i>Population and political organization</i><br>Throughout most of Hmong history, Chinese governmental control was imposed indirectly through native headmen known as <i>tusi</i>, who were responsible for keeping the peace, tax collection and organizing corvée labour. §REF§ (Diamond 2009, 3) Diamond, Norma. 2009. “Culture Summary: Miao.” eHRAF World Cultures. <a class=\"external free\" href=\"http://ehrafworldcultures.yale.edu/document?id=ae05-000\" rel=\"nofollow\">http://ehrafworldcultures.yale.edu/document?id=ae05-000</a>. Seshat URL: <a class=\"external free\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/Z9NGT72X\" rel=\"nofollow\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/Z9NGT72X</a>. §REF§  During the Republican period, the Chinese government attempted to assimilate the Hmong as much as possible and heavily discouraged displays of Hmong ethnicity. §REF§ (Diamond 2009, 3) Diamond, Norma. 2009. “Culture Summary: Miao.” eHRAF World Cultures. <a class=\"external free\" href=\"http://ehrafworldcultures.yale.edu/document?id=ae05-000\" rel=\"nofollow\">http://ehrafworldcultures.yale.edu/document?id=ae05-000</a>. Seshat URL: <a class=\"external free\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/Z9NGT72X\" rel=\"nofollow\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/Z9NGT72X</a>. §REF§ <br>In 1954, the population of the Hmong was estimated at 150,000. §REF§ (Graham 1954, 1) Graham, David Crockett. 1954. Songs and Stories of the Ch’uan Miao. Washington, DC: Smithsonian Institution. Seshat URL: <a class=\"external free\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/TWKSXKI8\" rel=\"nofollow\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/TWKSXKI8</a>. §REF§  Secure population estimates for earlier periods are lacking but the Hmong may have numbered around 200,000 during the Qing Dynasty.",
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                "id": 261,
                "name": "CnTangE",
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                "long_name": "Tang Dynasty I",
                "new_name": "cn_tang_dyn_1",
                "polity_tag": "LEGACY",
                "general_description": "The Tang Dynasty is widely considered a cultural and political high point of imperial China. The dynasty was founded by Li Yuan, the Duke of Tang, when the threat of insurrection forced the previous Sui dynasty court to flee from Luoyang, the capital, to Yangzhou. Li Yuan marched to Luoyang and seized the abandoned capital in 618 CE. §REF§ (Benn 2002, 1) Charles Benn. 2002. <i>China's Golden Age: Everyday Life in the Tang Dynasty</i>. Oxford: Oxford University Press. §REF§  He became the first emperor of the Tang dynasty (r. 618-626 CE) and is posthumously known as Gaozu. Under the Early Tang Dynasty, the capital was moved from Chang'an to Luoyang. §REF§ (Lewis 2009, 37) Mark Edward Lewis. 2009. <i>China's Cosmopolitan Empire: The Tang Dynasty</i>. Cambridge, MA: Harvard University Press. §REF§  We divide the Dynasty into an Early period (618-763 CE) and Late period (763-907 CE), separated by the decline in imperial authority and instability of experienced by the Tang in the 750s, culminating in the An Lushan rebellion to close out the Early period (755‒763 CE).<br>Under Early Tang leadership, China's territory expanded considerably. Conquered territories included large areas of Central Asia and northern Korea (Koguryō). §REF§ (Benn 2002, 2) Charles Benn. 2002. <i>China's Golden Age: Everyday Life in the Tang Dynasty</i>. Oxford: Oxford University Press. §REF§  In later years, however, China pursued a defensive, non-expansionist policy towards groups on the steppe and frontier. §REF§ (Benn 2002, 8) Charles Benn. 2002. <i>China's Golden Age: Everyday Life in the Tang Dynasty</i>. Oxford: Oxford University Press. §REF§ <br>The dynasty, also known as the Tang (T'ang) Empire or Li Dynasty, is famous for its poetry, literature, increased trade and general cosmopolitanism. §REF§ (Lewis 2009, 1) Mark Edward Lewis. 2009. <i>China's Cosmopolitan Empire: The Tang Dynasty</i>. Cambridge, MA: Harvard University Press. §REF§  In 660 CE, Empress Wu became the first woman to rule China, first governing as a regent to her young son and later ruling as empress dowager and regent until her death in 705 CE. §REF§ (Lewis 2009, 4-7) Mark Edward Lewis. 2009. <i>China's Cosmopolitan Empire: The Tang Dynasty</i>. Cambridge, MA: Harvard University Press. §REF§  Emperor Xuanzong's 44-year reign (712‒756 CE) ushered in a cultural and economic golden age, which declined as he aged and ended in rebellion and an overthrow of the dynasty. §REF§ (Benn 2002, 8-10) Charles Benn. 2002. <i>China's Golden Age: Everyday Life in the Tang Dynasty</i>. Oxford: Oxford University Press. §REF§ <br><i>Population and political organization</i><br>Emperor Gaozu worked to restore control of the imperial government that had been established by the Sui Dynasty, and founded frontier garrisons controlled directly by the capital. §REF§ (Benn 2002, 3) Charles Benn. 2002. <i>China's Golden Age: Everyday Life in the Tang Dynasty</i>. Oxford: Oxford University Press. §REF§  The Tang instituted the much discussed 'equal fields' system, in which land owned by the state was parcelled out in equal allotments to citizens in return for taxation. The Tang also minted many new coins in an attempt to stabilize the economy. §REF§ (Benn 2002, 3) Charles Benn. 2002. <i>China's Golden Age: Everyday Life in the Tang Dynasty</i>. Oxford: Oxford University Press. §REF§ <br>The Early Tang imperial government was characterized by an emperor who theoretically had absolute power, but was often in practice overruled by ministers or regents. §REF§ (Rodzinski 1979, 118) Witold Rodzinski. 1979. <i>A History of China, Volume 1</i>. Oxford: Pergamon Press. §REF§  The central government was headed by three chief ministers who ran the Imperial Chancellery, Imperial Secretariat, and the Department for State Affairs. §REF§ (Rodzinski 1979, 118) Witold Rodzinski. 1979. <i>A History of China, Volume 1</i>. Oxford: Pergamon Press. §REF§  The government also included a large central and state bureaucracy, marked by the expanding use of merit examinations. §REF§ (Roberts 1996, 94) J. A. G. Roberts. 1996. <i>A History of China, Volume 1: Prehistory to c. 1800</i>. Phoenix Mill: Alan Sutton Publishing. §REF§ <br>The population of the Early Tang Dynasty is estimated at 37 million in 700 CE and increased to almost 53 million by 754 CE. §REF§ (Rodzinski 1979, 129) Witold Rodzinski. 1979. <i>A History of China, Volume 1</i>. Oxford: Pergamon Press. §REF§  In the 8th century, there were an estimated 1 million people living in Chang'an. §REF§ (Roberts 1996, 106) J. A. G. Roberts. 1996. <i>A History of China, Volume 1: Prehistory to c. 1800</i>. Phoenix Mill: Alan Sutton Publishing. §REF§",
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                "private_comment": "JR: This was previously named \"Early Tang\". However, Ruth Mostern noted that our use of \"Early Tang\" for 617-763 CE and \"Later Tang\" for 763-907 was confusing because \"Later Tang\" is used by historians to refer to a short-lived regime 923-37.",
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                "long_name": "Western Jin",
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                "polity_tag": "LEGACY",
                "general_description": "The Western Jin dynasty (House of Sima, Jin dynasty) briefly reunified China after the Three Kingdoms period, but was marked by political turmoil and internal rebellion. Sima Yan overthrew Cao Wei emperor Cao Huan in 265 CE and declared himself the Western Jin emperor.§REF§ (San 2014, 145) San, Tan Koon. 2014. Dynastic China: An Elementary History. Malaysia: The Other Press. Seshat URL: <a href=\"https://www.zotero.org/groups/seshat_databank/items/itemKey/TB95WB7F)\">https://www.zotero.org/groups/seshat_databank/items/itemKey/TB95WB7F)</a>  §REF§ In its 280 CE conquest of Eastern Wu, Western Jin dynasty ended the Three Kingdoms period and reunified China.§REF§ (San 2014, 145) San, Tan Koon. 2014. Dynastic China: An Elementary History. Malaysia: The Other Press. Seshat URL: <a href=\"https://www.zotero.org/groups/seshat_databank/items/itemKey/TB95WB7F)\">https://www.zotero.org/groups/seshat_databank/items/itemKey/TB95WB7F)</a>  §REF§ However, the central government was in almost constant turmoil because of internal conflict and corruption.§REF§ (San 2014, 145) San, Tan Koon. 2014. Dynastic China: An Elementary History. Malaysia: The Other Press. Seshat URL: <a href=\"https://www.zotero.org/groups/seshat_databank/items/itemKey/TB95WB7F)\">https://www.zotero.org/groups/seshat_databank/items/itemKey/TB95WB7F)</a>  §REF§ A series of rebellions of princes against imperial authority known as the Revolts of the Imperial Princes (291-306 CE) weakened the central government and led to the Disorder of the Five Tribes (304-316 CE), a large uprising of northern nomadic tribes.§REF§ (San 2014, 146) San, Tan Koon. 2014. Dynastic China: An Elementary History. Malaysia: The Other Press. Seshat URL: <a href=\"https://www.zotero.org/groups/seshat_databank/items/itemKey/TB95WB7F)\">https://www.zotero.org/groups/seshat_databank/items/itemKey/TB95WB7F)</a> §REF§ In 316 CE, an imperial Jin prince fled south when a Xiongnu chief attacked the Western Jin capital of Luoyang. The prince went on to found the Eastern Jin dynasty in present day Nanjing.§REF§ (Theobald, 2000a) Theobald, U. 2000a. “Jin Dynasty (265-420).” Chinaknowledge.de <a href=\"http://www.chinaknowledge.de/History/Division/jin.html\">http://www.chinaknowledge.de/History/Division/jin.html</a>  Accessed June 17, 2017. Seshat URL: <a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/DTQ5UTD5\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/DTQ5UTD5</a>  §REF§ §REF§ (San 2014, 146) San, Tan Koon. 2014. Dynastic China: An Elementary History. Malaysia: The Other Press. Seshat URL: <a href=\"https://www.zotero.org/groups/seshat_databank/items/itemKey/TB95WB7F)\">https://www.zotero.org/groups/seshat_databank/items/itemKey/TB95WB7F)</a>  §REF§<br>The territory of the Western Jin empire was close to the size of the Han empire.§REF§ (Theobald 2011a) Theobald, U. 2011a. “Chinese History- Jin Period Geography.” Chinaknowledge.de. <a href=\"http://www.chinaknowledge.de/History/Division/jin-map.html\">http://www.chinaknowledge.de/History/Division/jin-map.html</a>  Accessed June 17, 2017. Seshat URL: <a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/VJ4ZVERD\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/VJ4ZVERD</a>  §REF§ We have estimated that Western Jin polity territory covered 4.5 million square kilometers in 300 CE.<br>Despite the political turmoil of the period, advancements made in agriculture, craftsmanship, architecture, medicine, astronomy, and mathematics.§REF§ (Theobald 2011b) Theobald, U. 2011b. “Chinese History- Science, Technology, and Inventions of the Three Kingdoms, Jin, and Southern and Northern Dynasties.” Chinaknowledge.de. <a href=\"http://www.chinaknowledge.de/History/Division/jin-tech.html\">http://www.chinaknowledge.de/History/Division/jin-tech.html</a>  Accessed June 17, 2017. Seshat URL: <a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/T5FAI5I6\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/T5FAI5I6</a> §REF§ Buddhism continued to spread throughout China, and Daoism was revived and seen as a more well-defined religion.§REF§ (Theobald, 2000a) Theobald, U. 2000a. “Jin Dynasty (265-420).” Chinaknowledge.de<a href=\"http://www.chinaknowledge.de/History/Division/jin.html\">http://www.chinaknowledge.de/History/Division/jin.html</a>  Accessed June 17, 2017. Seshat URL: <a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/DTQ5UTD5\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/DTQ5UTD5</a> §REF§ There were many writers, poets and artists from the time of the Jin and the period is often seen as the first period for traditional Chinese art.§REF§ (Theobald, 2000a) Theobald, U. 2000a. “Jin Dynasty (265-420).” Chinaknowledge.de <a href=\"http://www.chinaknowledge.de/History/Division/jin.html\">http://www.chinaknowledge.de/History/Division/jin.html</a>  Accessed June 17, 2017. Seshat URL: <a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/DTQ5UTD5\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/DTQ5UTD5</a> §REF§<br><i>Population and political organization</i><br>The Western Jin maintained many administrative structures of the Han. The empire was divided into provinces and semi-autonomous kingdoms.§REF§ (Theobald 2011a) Theobald, U. 2011a. “Chinese History- Jin Period Geography.” Chinaknowledge.de. <a href=\"http://www.chinaknowledge.de/History/Division/jin-map.html\">http://www.chinaknowledge.de/History/Division/jin-map.html</a>  Accessed June 17, 2017. Seshat URL: <a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/VJ4ZVERD\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/VJ4ZVERD</a>  §REF§ However the Western Jin operated as a neo-feudal society.§REF§ (Theobald, 2000a) Theobald, U. 2000a. “Jin Dynasty (265-420).” Chinaknowledge.de<a href=\"http://www.chinaknowledge.de/History/Division/jin.html\">http://www.chinaknowledge.de/History/Division/jin.html</a>  Accessed June 17, 2017. Seshat URL: <a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/DTQ5UTD5\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/DTQ5UTD5</a>  §REF§ Military rulers governed with the support of relatives, and Confucian values gradually disappeared from the central government and the education system.§REF§ (Theobald, 2000a) Theobald, U. 2000a. “Jin Dynasty (265-420).” Chinaknowledge.de <a href=\"http://www.chinaknowledge.de/History/Division/jin.html\">http://www.chinaknowledge.de/History/Division/jin.html</a>  Accessed June 17, 2017. Seshat URL: <a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/DTQ5UTD5\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/DTQ5UTD5</a>  §REF§ The weak central government struggled to control the non-Chinese tribes living in the empire.§REF§ (Theobald, 2000a) Theobald, U. 2000a. “Jin Dynasty (265-420).” Chinaknowledge.de<a href=\"http://www.chinaknowledge.de/History/Division/jin.html\">http://www.chinaknowledge.de/History/Division/jin.html</a>  Accessed June 17, 2017. Seshat URL: <a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/DTQ5UTD5\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/DTQ5UTD5</a>  §REF§<br>The population of the Western Jin empire was recorded as 16.16 million in a 280 CE census.§REF§ (Graff 2002, 35)Graff, D A. 2002. Medieval Chinese Warfare, 300-900. Routledge. London. Seshat URL: <a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/NUJQCRPA\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/NUJQCRPA</a>  §REF§The population of Luoyang was 600,000 people in 300 CE.§REF§ (Graff 2002, 50 )Graff, D A. 2002. Medieval Chinese Warfare, 300-900. Routledge. London. Seshat URL: <a href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/NUJQCRPA\">https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/NUJQCRPA</a>  §REF§",
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                "id": 268,
                "name": "CnYuan*",
                "start_year": 1271,
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                "long_name": "Great Yuan",
                "new_name": "cn_yuan_dyn",
                "polity_tag": "LEGACY",
                "general_description": "After a series of military campaigns, Kublai Khan, leader of the large and powerful Mongolian empire, took control of China and established a new Mongolian dynasty based in the territory of the former Jin empire. This polity, ruling from China, was to be known as the Yuan Dynasty, and lasted from 1271 CE until its eventual demise in 1368. §REF§ (Atwood 2004, 603) Christopher P. Atwood. 2004. <i>Encyclopedia of Mongolia and the Mongol Empire</i>. New York: Facts on File. §REF§ <br>The Yuan Dynasty was a continuation of the Mongolian Empire. However, Genghis Khan's empire had by this time fractured into rival Khanates, including the Chagatai Khanate, the Ilkhanate, and the Golden Horde. Although the Yuan Emperor was the nominal overlord of these regions, the Khanates were effectively independent. §REF§ (Atwood 2004, 603) Christopher P. Atwood. 2004. <i>Encyclopedia of Mongolia and the Mongol Empire</i>. New York: Facts on File. §REF§  The Yuan's core territory covered North China, Manchuria, and the Inner Mongolian steppe, §REF§ (Atwood 2004, 603) Christopher P. Atwood. 2004. <i>Encyclopedia of Mongolia and the Mongol Empire</i>. New York: Facts on File. §REF§  but military campaigns saw it expand over most of China, Tibet and into Korea. §REF§ (Atwood 2004, 604) Christopher P. Atwood. 2004. <i>Encyclopedia of Mongolia and the Mongol Empire</i>. New York: Facts on File. §REF§  However, their attempt to conquer Japan was thwarted by a typhoon. §REF§ (Morgan 2007, 107) David Morgan. 2007. <i>The Mongols</i>. Malden: Wiley-Blackwell. §REF§  Eventually, internal dissensions between the various <i>ordos</i> (political units) and local rebellions dissolved the fabric of the empire and led to its disaggregation. §REF§ (Franke and Twitchett 1994, 26) Herbert Franke and Denis Crispin Twitchett. 1994. 'Introduction', in <i>The Cambridge History of China, Vol 6: Alien Regimes and Border States, 907-1368</i>, edited by Herbert Franke and Denis C. Twitchett, 414-89. Cambridge: Cambridge University Press. §REF§ <br><i>Population and political organization</i><br>The Yuan Empire was a sociopolitical blend of Chinese and Mongolian features. At the top of the administrative, religious and military hierarchy sat the emperor, ruling under the traditional Chinese 'Mandate of Heaven'. §REF§ Connie Cook, Seshat North China Workshop, 2016. §REF§  Kublai Khan was the embodiment of a strong central authority, but the balance he created was only maintained for about 30 years after his death before emperors started to lose internal and external control over the Yuan dominion. §REF§ (Buell 2003, 62) Paul D. Buell. 2003. <i>Historical Dictionary of the Mongol World Empire</i>. Lanham, MD: Scarecrow Press. §REF§  Administratively, the empire was modelled on its Jin predecessor, and ruled through a variety of entities such as the Secretariat, the Military Affairs Bureau, and the Censorate. §REF§ (Atwood 2004, 606) Christopher P. Atwood. 2004. <i>Encyclopedia of Mongolia and the Mongol Empire</i>. New York: Facts on File. §REF§  However, it also retained Mongolian institutions, such as the <i>keshig</i> (imperial guard) and the <i>ordos</i>, which corresponded to the palace-tents, household and staff of various princes and lords. §REF§ (Atwood 2004, 606) Christopher P. Atwood. 2004. <i>Encyclopedia of Mongolia and the Mongol Empire</i>. New York: Facts on File. §REF§  These <i>ordos</i> acted as separate vassal states under nominal imperial control. §REF§ (Franke and Twitchett 1994, 26) Herbert Franke and Denis Crispin Twitchett. 1994. 'Introduction', in <i>The Cambridge History of China, Vol 6: Alien Regimes and Border States, 907-1368</i>, edited by Herbert Franke and Denis C. Twitchett, 414-89. Cambridge: Cambridge University Press. §REF§  In terms of territorial administration, the Yuan Dynasty comprised 12 provinces. §REF§ (Buell 2003, 60) Paul D. Buell. 2003. <i>Historical Dictionary of the Mongol World Empire</i>. Lanham, MD: Scarecrow Press. §REF§  In total, the population of Yuan China may have been between 60 §REF§ (Mote 1994, 618) Frederick W. Mote. 1994. 'Chinese Society under Mongol Rule, 1215-1368', in <i>The Cambridge History of China, Vol 6: Alien Regimes and Border States, 907-1368</i>, edited by Herbert Franke and Denis C. Twitchett, 616-64. Cambridge: Cambridge University Press. §REF§  and 85 million. §REF§ 《中國人口史》(第三卷)遼宋金元時期.第390頁.吳松弟.復旦大學出版社.2000年12月出版.《中國人口史》共六卷,由葛劍雄教授主編. §REF§ <br>Communications across the vast empire were facilitated by an elaborate postal system, described in detail by Marco Polo. There were 1,400 relay stations located every 25 to 50 kilometres along the main axes of communication, and messengers could cover up to 400 kilometres a day to relay urgent news. §REF§ (Rossabi 1994, 450) Morris Rossabi. 1994. 'The Reign of Khubilai Khan', in <i>The Cambridge History of China, Vol 6: Alien Regimes and Border States, 907-1368</i>, edited by Herbert Franke and Denis C. Twitchett, 414-89. Cambridge: Cambridge University Press. §REF§  Resources could be controlled by the state thanks to the use of paper currency, issued in proportion to silver reserves, and a commercial tax on the government-sponsored <i>ortoq</i> merchant class. §REF§ (Atwood 2004, 606) Christopher P. Atwood. 2004. <i>Encyclopedia of Mongolia and the Mongol Empire</i>. New York: Facts on File. §REF§  Another significant source of wealth was the salt monopoly, which had reached 80 percent of the government's income by 1320. §REF§ (Atwood 2004, 606) Christopher P. Atwood. 2004. <i>Encyclopedia of Mongolia and the Mongol Empire</i>. New York: Facts on File. §REF§ <br>Kublai oversaw the construction of a new capital, known as Dadu to the Chinese, Khanbalik to the Turks and Daidu to the Mongols, on the site of modern Beijing. §REF§ (Rossabi 1994, 454) Morris Rossabi. 1994. 'The Reign of Khubilai Khan', in <i>The Cambridge History of China, Vol 6: Alien Regimes and Border States, 907-1368</i>, edited by Herbert Franke and Denis C. Twitchett, 414-89. Cambridge: Cambridge University Press. §REF§  At its height, Dadu may have had 600,000 inhabitants. §REF§ (Atwood 2004, 123) Christopher P. Atwood. 2004. <i>Encyclopedia of Mongolia and the Mongol Empire</i>. New York: Facts on File. §REF§  The location of this city in the vicinity of the northern frontier enabled Kublai to retain control over the Mongolian homeland. §REF§ (Rossabi 1994, 454) Morris Rossabi. 1994. 'The Reign of Khubilai Khan', in <i>The Cambridge History of China, Vol 6: Alien Regimes and Border States, 907-1368</i>, edited by Herbert Franke and Denis C. Twitchett, 414-89. Cambridge: Cambridge University Press. §REF§  Its architecture and design embodied the syncretism of Mongolian and Chinese influences: it featured two inner walls and an imperial city, but also had avenues wide enough for nine horsemen to gallop abreast, and Mongolian yurts flourished in its parks. §REF§ (Rossabi 1994, 454) Morris Rossabi. 1994. 'The Reign of Khubilai Khan', in <i>The Cambridge History of China, Vol 6: Alien Regimes and Border States, 907-1368</i>, edited by Herbert Franke and Denis C. Twitchett, 414-89. Cambridge: Cambridge University Press. §REF§  The court was cosmopolitan and although Kublai followed Tantric Buddhism, he also had Confucian advisors §REF§ Vesna Wallace 2017, personal communication. §REF§  and welcomed foreigners such as the Polo family. The Yuan were patrons of education through state schools and temples; state organizations sponsored the study of Confucianism, astronomy, historiography and medicine. §REF§ (Atwood 2004, 606) Christopher P. Atwood. 2004. <i>Encyclopedia of Mongolia and the Mongol Empire</i>. New York: Facts on File. §REF§ <br>Yuan China encompassed a territory that fluctuated between roughly 11 and 24 million square kilometres, supporting a population of between 60 and 85 million people. §REF§ 《元史‧卷五八‧志第十‧地理一》,記載:「十三年,平宋,全有版圖。二十七年,又籍之,得戶一千一百八十四萬八百有奇。於是南北之戶總書於策者,一千三百一十九萬六千二百有六,口五千八百八十三萬四千七百一十有一,而山澤溪洞之民不與焉。」 §REF§  §REF§ 《中國人口史》(第三卷)遼宋金元時期.第390頁.吳松弟.復旦大學出版社.2000年12月出版.《中國人口史》共六卷,由葛劍雄教授主編。 §REF§",
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                "id": 510,
                "name": "EgBadar",
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                "long_name": "Badarian",
                "new_name": "eg_badarian",
                "polity_tag": "LEGACY",
                "general_description": "The Badarian, a Neolithic archaeological culture located in Upper Egypt and dating from c. 4400 to 3300 BCE, was first described in 1928 by archaeologists Guy Brunton and Gertrude Caton-Thompson, who excavated in the Badari district near Assyut. §REF§ (Hassan 1988, 138) F. A. Hassan. 1988. 'The Predynastic of Egypt'. <i>Journal of World Prehistory</i> 2 (2): 135-85. §REF§  Its relationship to an earlier culture, called the Tasian, is unclear, §REF§ (Hendrickx and Vermeersch 2000, 36-40) Stan Hendrickx and Pierre Vermeersch. 2000. 'Prehistory: From the Palaeolithic to the Badarian Culture', in <i>The Oxford History of Ancient Egypt</i>, edited by Ian Shaw, 16-40. Oxford: Oxford University Press. §REF§  but there is some evidence to link it to the later Naqada I period in Upper Egypt. §REF§ (Hendrickx and Vermeersch 2000, 36-40) Stan Hendrickx and Pierre Vermeersch. 2000. 'Prehistory: From the Palaeolithic to the Badarian Culture', in <i>The Oxford History of Ancient Egypt</i>, edited by Ian Shaw, 16-40. Oxford: Oxford University Press. §REF§  Little is known of the everyday lives of the people who occupied the Badarian sites: our information comes mainly from the numerous grave sites in the region around Assyut.<br><i>Population and political organization</i><br>Research on Badarian sites has yielded a total of about 600 graves and 40 poorly documented settlements. §REF§ (Hendrickx and Vermeersch 2000, 36-40) Stan Hendrickx and Pierre Vermeersch. 2000. 'Prehistory: From the Palaeolithic to the Badarian Culture', in <i>The Oxford History of Ancient Egypt</i>, edited by Ian Shaw, 16-40. Oxford: Oxford University Press. §REF§  The culture was first identified in the el-Badari region, near the modern city of Sohag, but several small sites near the villages of Qau el-Kebir, Hammamiya, Mostagedda, and Matmar are also categorized as Badarian. §REF§ (Hendrickx and Vermeersch 2000, 36-40) Stan Hendrickx and Pierre Vermeersch. 2000. 'Prehistory: From the Palaeolithic to the Badarian Culture', in <i>The Oxford History of Ancient Egypt</i>, edited by Ian Shaw, 16-40. Oxford: Oxford University Press. §REF§  Characteristic Badarian material culture has also been discovered much further south at Mahgar Dendera, Armant, Elkab, and Hierakonpolis, as well as to the east of the Nile in the Wadi Hammamat. §REF§ (Hendrickx and Vermeersch 2000, 36-40) Stan Hendrickx and Pierre Vermeersch. 2000. 'Prehistory: From the Palaeolithic to the Badarian Culture', in <i>The Oxford History of Ancient Egypt</i>, edited by Ian Shaw, 16-40. Oxford: Oxford University Press. §REF§ <br>The archaeology of the period has inevitably been affected by the flooding of the Nile over the millennia: any larger, more permanent settlements were likely situated close to the great river and subsequently washed away or covered with alluvium. §REF§ (Hendrickx and Vermeersch 2000, 36-40) Stan Hendrickx and Pierre Vermeersch. 2000. 'Prehistory: From the Palaeolithic to the Badarian Culture', in <i>The Oxford History of Ancient Egypt</i>, edited by Ian Shaw, 16-40. Oxford: Oxford University Press. §REF§  Surviving remains come from raised desert spurs and include 'huts and windbreaks associated with hearths and large, well-shaped granary pits or silos'. §REF§ (Hassan 1988, 153) F. A. Hassan. 1988. 'The Predynastic of Egypt'. <i>Journal of World Prehistory</i> 2 (2): 135-85. §REF§  A Badarian settlement at Deir Tasa covered an area of about 5000 square metres. §REF§ (Hassan 1988, 153) F. A. Hassan. 1988. 'The Predynastic of Egypt'. <i>Journal of World Prehistory</i> 2 (2): 135-85. §REF§  At the Seshat standard of 50-200 inhabitants per hectare, this gives us an estimated population between the range of 25 and 100 inhabitants.<br>Evidence from Badarian settlements shows that the people who occupied these sites were primarily engaged in agriculture and animal husbandry, §REF§ (Hendrickx and Vermeersch 2000, 36-40) Stan Hendrickx and Pierre Vermeersch. 2000. 'Prehistory: From the Palaeolithic to the Badarian Culture', in <i>The Oxford History of Ancient Egypt</i>, edited by Ian Shaw, 16-40. Oxford: Oxford University Press. §REF§  but we know trade also occurred. Badarians imported raw materials like wood, turquoise, shells and ivory and exchanged goods with groups from as far away as Palestine, the Red Sea and Syria. §REF§ (Trigger 1983, 29) Bruce G. Trigger. 1983. 'The Rise of Egyptian Civilization', in <i>Ancient Egypt: A Social History</i> edited by Bruce G. Trigger, Barry J. Kemp, David O'Connor and Alan B Lloyd, 1-70. Cambridge: Cambridge University Press. §REF§  Model boats found at the site of Merimda to the north 'suggest that boats and canoes were already in use [in Egypt] before 4500 B.C.' §REF§ (Hassan 1988, 157) F. A. Hassan. 1988. 'The Predynastic of Egypt'. <i>Journal of World Prehistory</i> 2 (2): 135-85. §REF§ <br>Very little can be concluded about Badarian political and social structure, but analysis of grave goods shows that there was an unequal distribution of wealth, and that the wealthier graves tended to be kept separate within the cemeteries. §REF§ (Hendrickx and Vermeersch 2000, 36-40) Stan Hendrickx and Pierre Vermeersch. 2000. 'Prehistory: From the Palaeolithic to the Badarian Culture', in <i>The Oxford History of Ancient Egypt</i>, edited by Ian Shaw, 16-40. Oxford: Oxford University Press. §REF§  However, no monumental remains have been found so it is likely that higher-status members of society did not command a significant labour force.",
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            "polity": {
                "id": 264,
                "name": "CnTangL",
                "start_year": 763,
                "end_year": 907,
                "long_name": "Tang Dynasty II",
                "new_name": "cn_tang_dyn_2",
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                "general_description": "The Tang Dynasty is widely considered a cultural and political high point of imperial China. The dynasty was founded by Li Yuan, the Duke of Tang, when the threat of insurrection forced the previous Sui dynasty court to flee from Luoyang, the capital, to Yangzhou. Li Yuan marched to Luoyang and seized the abandoned capital in 618 CE. §REF§ (Benn 2002, 1) Charles Benn. 2002. <i>China's Golden Age: Everyday Life in the Tang Dynasty</i>. Oxford: Oxford University Press. §REF§  He became the first emperor of the Tang dynasty (r. 618-626 CE) and is posthumously known as Gaozu. Under the Early Tang Dynasty, the capital was moved from Chang'an to Luoyang. §REF§ (Lewis 2009, 37) Mark Edward Lewis. 2009. <i>China's Cosmopolitan Empire: The Tang Dynasty</i>. Cambridge, MA: Harvard University Press. §REF§  We divide the Dynasty into an Early period (618-763 CE) and Late period (763-907 CE), separated by the decline in imperial authority and instability of experienced by the Tang in the 750s, culminating in the An Lushan rebellion to close out the Early period (755‒763 CE).<br>The Tang Dynasty continued to rule China after the defeat of the An Lushan rebellion (755‒763 CE). §REF§ (Perkins 1999, 11) Dorothy Perkins. 1999. <i>Encyclopedia of China</i>. New York: Routledge. §REF§  However, the government never fully recovered from its impact. §REF§ (Perkins 1999, 11) Dorothy Perkins. 1999. <i>Encyclopedia of China</i>. New York: Routledge. §REF§  Tang border defences were devastated, leading to attacks from outsiders and pirates. The Tang government maintained an often-uneasy alliance with the Uighurs against the Tibetans. §REF§ (Benn 2002, 12) Charles Benn. 2002. <i>Daily Life in Traditional China: The Tang Dynasty</i>. Westport, CT: Greenwood Press. §REF§  In 790, Tibetan forces occupied Chinese land in eastern Turkestan and ended Chinese rule in the region for almost a thousand years. §REF§ (Lewis 2009, 64) Mark Edward Lewis. 2009. <i>China's Cosmopolitan Empire: The Tang Dynasty</i>. Cambridge, MA: Harvard University Press. §REF§  §REF§ (Benn 2002, 11) Charles Benn. 2002. <i>Daily Life in Traditional China: The Tang Dynasty</i>. Westport, CT: Greenwood Press. §REF§ <br>Late Tang China was marked by conflict, with the occasional brief period of peace. Emperor Xianzong's campaigns against rebel governors in the early 9th century restored almost all of China back to direct rule under the Tang government. §REF§ (Lewis 2009, 64) Mark Edward Lewis. 2009. <i>China's Cosmopolitan Empire: The Tang Dynasty</i>. Cambridge, MA: Harvard University Press. §REF§  Xianzong was successful in restoring stability to the Tang Empire and his death was followed by 40 years of peace. §REF§ (Benn 2002, 16) Charles Benn. 2002. <i>Daily Life in Traditional China: The Tang Dynasty</i>. Westport, CT: Greenwood Press. §REF§  Later, Emperor Wuzong persecuted Buddhists and adherents of other non-indigenous religions. His movement reached its height in 845 CE and most monasteries were destroyed, but his successors reversed his anti-Buddhist policies. §REF§ (Benn 2002, 16-17) Charles Benn. 2002. <i>Daily Life in Traditional China: The Tang Dynasty</i>. Westport, CT: Greenwood Press. §REF§ <br>The dynasty fell in 881 CE after a series of internal rebellions, leading to about a century characterized by the rise of powerful warlords in the south and political turmoil in the north §REF§ (Ebrey 1996, 136) Patricia Buckley Ebrey. 1996. <i>The Cambridge Illustrated History of China</i>. Cambridge: Cambridge University Press. §REF§  before another period of Chinese efflorescence under the Northern Song Dynasty. §REF§ (Benn 2002, 18) Charles Benn. 2002. <i>Daily Life in Traditional China: The Tang Dynasty</i>. Westport, CT: Greenwood Press. §REF§ <br><i>Population and political organization</i><br>The Late Tang Dynasty was marked by tensions between the central government and military garrisons. §REF§ (Lewis 2009, 60) Mark Edward Lewis. 2009. <i>China's Cosmopolitan Empire: The Tang Dynasty</i>. Cambridge, MA: Harvard University Press. §REF§  In 763 CE, two-thirds of the provincial governors were military commanders. §REF§ (Benn 2002, 12) Charles Benn. 2002. <i>Daily Life in Traditional China: The Tang Dynasty</i>. Westport, CT: Greenwood Press. §REF§  Tang emperors attempted to weaken the central bureaucracy by having military governors pay direct tribute instead of taxes. §REF§ (Lewis 2009, 63) Mark Edward Lewis. 2009. <i>China's Cosmopolitan Empire: The Tang Dynasty</i>. Cambridge, MA: Harvard University Press. §REF§  The Tang government implemented the two-tax system in 780 CE, which replaced the 'equal land' distribution system of the Early Tang. §REF§ (Lewis 2009, 65) Mark Edward Lewis. 2009. <i>China's Cosmopolitan Empire: The Tang Dynasty</i>. Cambridge, MA: Harvard University Press. §REF§  This system of taxation represented an attempt to weaken military garrison governments and to divert taxation income to the central government. §REF§ (Lewis 2009, 65) Mark Edward Lewis. 2009. <i>China's Cosmopolitan Empire: The Tang Dynasty</i>. Cambridge, MA: Harvard University Press. §REF§ <br>The Late Tang central government was marked by the rise of eunuchs. Eunuchs did not hold powerful positions in the Early Tang government, but in the later period the Department of the Inner Palace, staffed by eunuchs, became a powerful governmental authority ‒ more powerful than the emperor's chief ministers. §REF§ (Dalby 1979, 571-72) Michael T. Dalby. 1979. 'Court Politics in Late T'ang Times', in <i>The Cambridge History of China, Volume 3: Sui and T'ang China, 589-906 AD, Part One</i>, edited by D. C. Twitchett, 561-681. Cambridge: Cambridge University Press. §REF§ <br>Because the dynasty was marked by almost constant conflict, the population of Late Tang China is difficult to estimate. In 766 CE there were between 40 million and 55 million citizens, §REF§ (Rodzinski 1979, 130) Witold Rodzinski. 1979. <i>A History of China, Volume 1</i>. Oxford: Pergamon Press. §REF§  and in 900 CE there were between 60 million and 80 million. §REF§ (Lorge 2005, 182) Peter A. Lorge. 2005. <i>War, Politics and Society in Early Modern China, 900‒1795</i>. Abingdon: Routledge. §REF§",
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                "private_comment": "JR: This was previously named \"Later Tang\". However, Ruth Mostern noted that our use of \"Early Tang\" for 617-763 CE and \"Later Tang\" for 763-907 was confusing because \"Later Tang\" is used by historians to refer to a short-lived regime 923-37.",
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                    "fao_country": "China",
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