Khagan in the context of "Kadan"

Khan (/xɑːn/, /kɑːn/, /kæn/) is a historic Turkic and Mongolic title originating among nomadic tribes in the Central and Eastern Eurasian Steppe to refer to a king. It first appears among the Rouran and then the Göktürks as a variant of khagan (sovereign, emperor) and implied a subordinate ruler. In the Seljük Empire, it was the highest noble title, ranking above malik (king) and emir (prince). In the Mongol Empire it signified the ruler of a horde (ulus), while the ruler of all the Mongols was the khagan or great khan. It is a title commonly used to signify the head of a Pashtun tribe or clan.

The title subsequently declined in importance. During the Safavid and Qajar dynasty it was the title of an army general high noble rank who was ruling a province, and in Mughal India it was a high noble rank restricted to courtiers. After the downfall of the Mughals it was used promiscuously and became a surname. Khan and its female forms occur in many personal names, generally without any nobiliary of political relevance, although it remains a common part of noble names as well.

The Yuan dynasty, officially the Great Yuan, was a Mongol-led imperial dynasty of China and a successor state to the Mongol Empire after its division. It was established by Kublai (Emperor Shizu or Setsen Khan), the fifth khagan-emperor of the Mongol Empire from the Borjigin clan, and lasted from 1271 to 1368. In Chinese history, the Yuan dynasty followed the Song dynasty and preceded the Ming dynasty.

Although Genghis Khan's enthronement as Khagan in 1206 was described in Chinese as the Han-style title of Emperor and the Mongol Empire had ruled territories including modern-day northern China for decades, it was not until 1271 that Kublai Khan officially proclaimed the dynasty in the traditional Han style, and the conquest was not complete until 1279 when the Southern Song dynasty was defeated in the Battle of Yamen. His realm was, by this point, isolated from the other Mongol-led khanates and controlled most of modern-day China and its surrounding areas, including modern-day Mongolia. It was the first dynasty founded by a non-Han ethnicity that ruled all of China proper. In 1368, following the defeat of the Yuan forces by the Ming dynasty, the Genghisid rulers retreated to the Mongolian Plateau and continued to rule until 1635 when they surrendered to the Later Jin dynasty (which later evolved into the Qing dynasty). The rump state is known in historiography as the Northern Yuan.

Möngke Khan (also Möngke Khagan or Möngke; 11 January 1209 – 11 August 1259) was the fourth khagan of the Mongol Empire, ruling from 1 July 1251 to 11 August 1259. He was the first Khagan from the Toluid line, and made significant reforms to improve the administration of the Empire during his reign. Under Möngke, the Mongols conquered Iraq and Syria as well as the kingdom of Dali (modern Yunnan).

King of Kings was an imperial title employed primarily by monarchs based in the Middle East and the Indian subcontinent. Commonly associated with Iran (historically known as Persia in the West), especially the Achaemenid and Sasanian Empires, the title was originally introduced during the Middle Assyrian Empire by King Tukulti-Ninurta I (reigned 1233–1197 BC) and was subsequently used in a number of different kingdoms and empires, including the aforementioned Persia, various Hellenic kingdoms, India, Armenia, Georgia, and Ethiopia.

The title is commonly seen as equivalent to that of Emperor, both titles outranking that of king in prestige, stemming from the late antique Roman and Eastern Roman emperors who saw the Shahanshahs of the Sasanian Empire as their equals. The last reigning monarchs to use the title of Shahanshah, those of the Pahlavi dynasty in Iran (1925–1979), also equated the title with "Emperor". The rulers of the Ethiopian Empire used the title of Nəgusä Nägäst (literally "King of Kings"), which was officially translated as "Emperor". Sultan of Sultans is the sultanic equivalent of King of Kings and similarly, Khagan can mean "Khan of Khans". Later, lesser versions Amir al-umara ("Emir of Emirs") and Beylerbey ("Bey of Beys") appeared.

A khanate (/ˈxɑːneɪt, -ət/ KHAHN-ayt, -⁠ət) or khaganate was a polity ruled by a khan, khagan, khatun, or khanum. Khanates were typically nomadic Mongolic and Turkic societies located on the Eurasian Steppe, and politically equivalent in status to kinship-based chiefdoms and feudal monarchies. Khanates and khaganates were organised tribally, where leaders gained power on the support and loyalty of their warrior subjects, gaining tribute from subordinates as realm funding. In comparison to a khanate, a khaganate, the realm of a khagan, was a large nomadic state maintaining subjugation over numerous smaller khanates. The title of khagan, translating as "Khan of the Khans", roughly corresponds in status to that of an emperor.

The division of the Mongol Empire began after Möngke Khan died in 1259 in the siege of Diaoyu Castle with no declared successor, precipitating infighting between members of the Tolui family line for the title of khagan that escalated into the Toluid Civil War. This civil war, along with the Berke–Hulagu war and the subsequent Kaidu–Kublai war, greatly weakened the authority of the great khan over the entirety of the Mongol Empire, and the empire fractured into four khanates: the Golden Horde in Eastern Europe, the Chagatai Khanate in Central Asia, the Ilkhanate in Iran, and the Yuan dynasty in China based in modern-day Beijing – although the Yuan emperors held the nominal title of khagan of the empire.

The four divisions each pursued their own interests and objectives and fell at different times. Most of the western khanates did not recognize Kublai as Great Khan. Although some of them still asked Kublai to confirm the enthronement of their new regional khans, the four khanates were functionally independent sovereign states. The Ilkhanate and the Yuan dynasty had close diplomatic relations, and shared scientific and cultural knowledge, but military cooperation between all four Mongol khanates would never occur again — the united Mongol Empire had disintegrated.

The Rouran Khaganate (Chinese:柔然; Róurán), also known as Ruanruan or Juan-juan (蠕蠕; Ruǎnruǎn) (or variously Jou-jan, Ruruan, Ju-juan, Ruru, Ruirui, Rouru, Rouruan or Tantan), was a tribal confederation and later state. The Rouran state was undoubtedly multi-ethnic. As the ancient sources regard the Rouran as a separate branch of the Xiongnu Book of Song and Book of Liang connected Rourans to the earlier Xiongnu while the Book of Wei connected them to Proto-Mongolic Donghu. The Rouran supreme rulers used the title of khagan, a popular title borrowed from the Xianbei. The Rouran Khaganate lasted from the late 4th century until the middle 6th century with territory that covered all of modern-day Mongolia and Inner Mongolia, as well as parts of Manchuria in Northeast China, Eastern Siberia, Xinjiang, and Kazakhstan. The Hephthalites were vassals of the Rouran Khaganate until the beginning of the 5th century, with the royal house of Rourans intermarrying with the royal houses of the Hephthalites. The Rouran Khaganate ended when they were defeated by a Göktürk rebellion at the peak of their power, which subsequently led to the rise of the Turks in world history.

Their Khaganate overthrown, some Rouran remnants possibly became Tatars while others possibly migrated west and became the Pannonian Avars (known by such names as Varchonites or Pseudo Avars), who settled in Pannonia (centred on modern Hungary) during the 6th century. These Avars were pursued into the Byzantine Empire by the Göktürks, who referred to the Avars as a slave or vassal people, and requested that the Byzantines expel them. While this Rouran-Avars link remains a controversial theory, a recent DNA study has confirmed the genetic origins of the Avar elite as originating from the Mongolian plains. Other theories instead link the origins of the Pannonian Avars to peoples such as the Uar.

Khanbaliq (Chinese: 汗八里; pinyin: Hánbālǐ; Mongolian: ᠬᠠᠭᠠᠨ ᠪᠠᠯᠭᠠᠰᠤ, Qaɣan balɣasu) or Dadu (Chinese: 元大都; pinyin: Yuán Dàdū; Mongolian: ᠳᠠᠶ᠋ᠢᠳᠤ, Dayidu) was the winter capital of the Mongol-led Yuan dynasty in what is now Beijing, the capital of China today. It was located at the center of modern Beijing. The Secretariat directly administered the Central Region (腹裏) of the Yuan dynasty (comprising present-day Beijing, Hebei, Shandong, Shanxi, and parts of Henan and Inner Mongolia) and dictated policies for the other provinces. As emperors of the Yuan dynasty, Kublai Khan and his successors also claimed supremacy over the entire Mongol Empire following the death of Möngke (Kublai's brother and predecessor) in 1259. Over time the unified empire gradually fragmented into a number of khanates.

Khanbaliq is the direct predecessor to modern Beijing. Several stations of the modern city's subway's Line 10 and Line 13 are named after the gates of Dadu.

The Yuan dynasty was an imperial dynasty of China, proclaimed on 18 December 1271 by Kublai Khan, which succeeded the Song dynasty and preceded the Ming dynasty. It also functioned as a continuation of the Mongol Empire, which was founded by Genghis Khan in 1206, but which subsequently split into four autonomous states. The emperors of the Yuan dynasty thus comprise both Kublai's successors as rulers of China and his predecessors up to his grandfather Genghis, who was retrospectively presented as the founder of the dynasty.

The rulers of the Yuan dynasty were nominally superior to those of the other three post-Mongol states, but each was de facto independent of the others and occupied with their own territories. The Yuan dynasty adopted Han political traditions, including the use of posthumous names, temple names and era names. Aside from the title of emperor, Yuan rulers also concurrently held the title of khagan.