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Liu Hong (astronomer)
Liu Hong (129–210), courtesy name Yuanzhuo, was a Chinese astronomer, mathematician, and politician who lived in the late Eastern Han dynasty. He developed a work on predicting the passage of the moon which was in use during the Three Kingdoms period of China. Life Liu Hong was from Mengyin County (), Taishan Commandery, which is present-day Mengyin County, Shandong, and was a descendant of Liu Yu, the Prince of Lu, a son of Emperor Jing ( 157–141 BCE). He developed an interest in astronomy at an early age. He was made an officer at the Imperial Astronomy around 160 CE which led to him writing the lost works ''Qi Yao Shu'' (七曜術; ''The Art of the Seven Planets'') and ''Ba Yuan Shu'' (八元術; ''The Art of Eight Elements''). After the death of his father, Liu Hong retired for a short time but then returned to his work, collaborating with Cai Yong on the ''Qian Xiang Li'' (乾象曆; ''Qian Xiang Calendar''). This was considered so advanced for its time that it was ...
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Emperor Xian Of Han
Emperor Xian of Han (2 April 181 – 21 April 234), personal name Liu Xie (劉協), courtesy name Bohe, was the 14th and last emperor of the Eastern Han dynasty in China. He reigned from 28 September 189 until 11 December 220. Liu Xie was a son of Liu Hong (Emperor Ling) and was a younger half-brother of his predecessor, Liu Bian (Emperor Shao). In 189, at the age of eight, he became emperor after the warlord Dong Zhuo, who had seized control of the Han central government, deposed Emperor Shao and replaced him with Liu Xie. The newly enthroned Liu Xie, historically known as Emperor Xian, was in fact a puppet ruler under Dong Zhuo's control. In 190, when a coalition of regional warlords launched a punitive campaign against Dong Zhuo in the name of freeing Emperor Xian, Dong Zhuo ordered the destruction of the imperial capital, Luoyang, and forcefully relocated the imperial capital along with its residents to Chang'an. After Dong Zhuo's assassination in 192, Emperor Xian f ...
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Eastern Wu
Wu ( Chinese: 吳; pinyin: ''Wú''; Middle Chinese *''ŋuo'' < Eastern Han Chinese: ''*ŋuɑ''), known in historiography as Eastern Wu or Sun Wu, was one of the three major states that competed for supremacy over in the Three Kingdoms period (220–280). It previously existed from 220–222 as a vassal kingdom nominally under Cao Wei, its rival state, but declared independence from Wei and became a sovereign state in 222. It became an empire in 229 after its founding ruler,

Han Dynasty Politicians From Shandong
Han may refer to: Ethnic groups * Han Chinese, or Han People (): the name for the largest ethnic group in China, which also constitutes the world's largest ethnic group. ** Han Taiwanese (): the name for the ethnic group of the Taiwanese people who may be fully or partially Han Chinese descent. * Han Minjok, or Han people (): the Korean native name referring to Koreans. * Hän: one of the First Nations peoples of Canada. Former states * Han (Western Zhou state) (韓) (11th century BC – 757 BC), a Chinese state during the Spring and Autumn period * Han (state) (韓) (403–230  BC), a Chinese state during the Warring States period * Han dynasty (漢/汉) (206 BC – 220 AD), a dynasty split into two eras, Western Han and Eastern Han ** Shu Han (蜀漢) (221–263), a Han Chinese dynasty that existed during the Three Kingdoms Period * Former Zhao (304–329), one of the Sixteen Kingdoms, known as Han (漢) before 319 * Cheng Han (成漢) (304–347), one of the Six ...
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Ancient Chinese Mathematicians
Ancient history is a time period from the beginning of writing and recorded human history to as far as late antiquity. The span of recorded history is roughly 5,000 years, beginning with the Sumerian cuneiform script. Ancient history covers all continents inhabited by humans in the period 3000 BCAD 500. The three-age system periodizes ancient history into the Stone Age, the Bronze Age, and the Iron Age, with recorded history generally considered to begin with the Bronze Age. The start and end of the three ages varies between world regions. In many regions the Bronze Age is generally considered to begin a few centuries prior to 3000 BC, while the end of the Iron Age varies from the early first millennium BC in some regions to the late first millennium AD in others. During the time period of ancient history, the world population was already exponentially increasing due to the Neolithic Revolution, which was in full progress. While in 10,000 BC, the world population stood ...
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3rd-century Chinese Mathematicians
The 3rd century was the period from 201 ( CCI) to 300 ( CCC) Anno Domini (AD) or Common Era (CE) in the Julian calendar.. In this century, the Roman Empire saw a crisis, starting with the assassination of the Roman Emperor Severus Alexander in 235, plunging the empire into a period of economic troubles, barbarian incursions, political upheavals, civil wars, and the split of the Roman Empire through the Gallic Empire in the west and the Palmyrene Empire in the east, which all together threatened to destroy the Roman Empire in its entirety, but the reconquests of the seceded territories by Emperor Aurelian and the stabilization period under Emperor Diocletian due to the administrative strengthening of the empire caused an end to the crisis by 284. This crisis would also mark the beginning of Late Antiquity. In Persia, the Parthian Empire was succeeded by the Sassanid Empire in 224 after Ardashir I defeated and killed Artabanus V during the Battle of Hormozdgan. The Sassanids th ...
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210 Deaths
1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length 1. In conventions of sign where zero is considered neither positive nor negative, 1 is the first and smallest positive integer. It is also sometimes considered the first of the infinite sequence of natural numbers, followed by  2, although by other definitions 1 is the second natural number, following  0. The fundamental mathematical property of 1 is to be a multiplicative identity, meaning that any number multiplied by 1 equals the same number. Most if not all properties of 1 can be deduced from this. In advanced mathematics, a multiplicative identity is often denoted 1, even if it is not a number. 1 is by convention not considered a prime number; this was not universally accepted until the mid-20th century. Additionally, 1 is the ...
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Shanyang Commandery
Shanyang Commandery ( zh, 山陽郡) was a historical commandery in China, located in present-day southern Shandong province. In early Han dynasty, Shanyang was part of the Liang Kingdom. In 144 BC, Liang was split into five kingdoms among the sons of King Xiao, with Liu Ding gaining Shanyang. Ding died in 136 BC, posthumously known as the King Ai (哀) of Shanyang, and the territory was converted into a commandery.''Book of Han'', Chapter 14. In 97 BC, Emperor Wu granted Shanyang to his son Liu Bo (劉髆) as the Changyi Kingdom (昌邑國). Bo ruled for 11 years and was known as the King Ai (哀) of Changyi. His successor Liu He was selected as the new Han emperor by regent Huo Guang in 74 BC, and the kingdom was converted to a commandery. In 2 AD, it administered 23 counties and marquessates, including Changyi (昌邑), Nanpingyang (南平陽), Chengwu (成武), Huling (湖陵), Dongniang (東嬢), Fangyu (方與), Tuo (橐), Juye (鉅野), Shanfu (單父), Bo (薄), ...
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Nuncio
An apostolic nuncio ( la, nuntius apostolicus; also known as a papal nuncio or simply as a nuncio) is an Ecclesiology, ecclesiastical diplomat, serving as an envoy or a permanent diplomatic representative of the Holy See to a Sovereign state, state or to an international organization. A nuncio is appointed by and represents the Holy See, and is the head of the diplomatic mission, called an Apostolic Nunciature, which is the equivalent of an embassy. The Holy See is legally distinct from the Vatican City or the Catholic Church. In modern times, a nuncio is usually an archbishop#Titular archiepiscopal sees, archbishop. An apostolic nuncio is generally equivalent in rank to that of ambassador extraordinary and plenipotentiary, although in Catholic countries the nuncio often ranks above ambassadors in diplomatic protocol. A nuncio performs the same functions as an ambassador and has the same diplomatic privileges. Under the 1961 Vienna Convention on Diplomatic Relations, to which th ...
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