Dangun country of citizenship Gojoseon
Dangun or Tangun (단군; 檀君; [tan.ɡun]), also known as Dangun Wanggeom (단군왕검; 檀君王儉; [tan.ɡun waŋ.ɡʌm]), was the legendary founder and god-king of Gojoseon, the first Korean kingdom, around present-day Liaoning province in Northeast China and the northern part of the Korean Peninsula. He is said to be the "grandson of heaven" and "son of a bear", and to have founded the kingdom in 2333 BC. The earliest recorded version of the Dangun legend appears in the 13th-century Samguk Yusa, which cites China's Book of Wei and Korea's lost historical record Gogi (lit. 'Ancient Record') (고기, 古記). However, it has been confirmed that there is no relevant record in the China's Book of Wei. There are around seventeen religious groups that focus on the worship of Dangun.
Koreans regard the day when Dangun founded Gojoseon, Korea's first dynasty, as a national holiday and call it Gaecheonjeol (개천절; 開天節). The Gaecheonjeol is 3 October. It is a religious anniversary started by Daejonggyo (대종교; 大倧教) worshipping Dangun. Gaecheonjeol is a day to commemorate Dangun's founding of Gojoseon, but 3 October is not actually the date when Gojoseon was founded.
Many Korean historians regard Dangun and Tengri as being etymologically identical.The mythical record and its interpretation
Dangun's ancestry legend begins with his grandfather Hwanin (환인/桓因), the "Lord of Heaven". Hwanin had a son, Hwanung (환웅/ Hanja: 桓雄), who yearned to live on the earth among the valleys and the mountains. Hwanin permitted Hwanung and 3,000 followers to descend onto Baekdu Mountain, where Hwanung founded the Sinsi (신시/ Hanja: 神市, "City of God"). Along with his ministers of clouds, rain and wind, he instituted laws and moral codes and taught humans various arts, medicine, and agriculture. Legend attributes the development of acupuncture and moxibustion to Dangun.A tiger and a bear prayed to Hwanung that they might become human. Upon hearing their prayers, Hwanung gave them twenty cloves of garlic and a bundle of mugwort, ordering them to eat only this sacred food and remain out of the sunlight for 100 days. The tiger gave up after about twenty days and left the cave. However, the bear persevered and was transformed into a woman. The bear and the tiger are said to represent two tribes that sought the favor of the heavenly prince.The bear-woman, Ungnyeo, (Hangul; 웅녀/ Hanja: 熊女) was grateful and made offerings to Hwanung. However, she lacked a husband, and soon became sad and prayed beneath a  "divine birch" tree (Korean: 신단수; Hanja: 神檀樹; RR: shindansu) to be blessed with a child. Hwanung, moved by her prayers, took her for his wife and soon she gave birth to a son named Dangun Wanggeom.Dangun ascended to the throne, built the walled city of Asadal situated near Pyongyang (the location is disputed), and called the kingdom Joseon—referred to today as Gojoseon "Old/Ancient Joseon" (고조선, Hanja: 古朝鮮) so as not to be confused with the later kingdom of Joseon (조선, Hanja: 朝鮮) that was established roughly 2000 years later. He then moved his capital to Asadal on Mount Paegak or Mount Gunghol.Dangun's biography reflected the interest of the people of Dangun Joseon (Gojoseon) at the time in establishing the legitimacy of the kingship of Gojoseon and the dignity of the country. The king of Gojoseon conducted a ritual in honor of his ancestral god every year. Soon, the myth of Dangun was the political ideology of the Gojoseon period, and the ritual had a function of political assembly.
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