Overview

The Tibetan civilizational sphere spans eight distinct polity phases across 2,450 years. It begins with the Zhangzhung kingdom of western Tibet (c. 500 BCE–617 CE), a Bön-centred polity whose founding date derives entirely from Bön textual tradition — no contemporaneous inscription or external source attests Zhangzhung before the 7th-century Old Tibetan annals; it is treated here as a semi-legendary polity reflecting the documented Bön cultural heartland. The Yarlung Dynasty (c. 127 BCE–617 CE) gradually unified the central plateau, and under Songtsen Gampo (618–650) conquered Zhangzhung, moved the capital to Lhasa, and introduced the Tibetan script. The Tibetan Empire at its peak (650–842) was one of the most formidable powers in Central Asia, briefly sacking Tang Chang'an (763) and controlling segments of the Silk Road. Langdarma's assassination (842) fragmented the empire for four centuries before Sakya hegemony under Mongol suzerainty (1247–1354), Phagmodrupa consolidation (1354–1641), and finally the Ganden Phodrang theocracy (1642–1950) under the Dalai Lama institution, which ended with the People's Liberation Army entering Tibet in October 1950.

Territory Phases

1. Zhangzhung Kingdom500 BCE – 617 CE

   The Zhangzhung kingdom of western Tibet (c. 500 BCE–617 CE), centred on the sacred Mount Kailash (Kang Rinpoche) and the headwaters of the Indus, Sutlej, and Brahmaputra rivers in the Ngari/Guge region. Zhangzhung was the heartland of the indigenous Bon religion, with a sophisticated oral and textual tradition predating Buddhism in Tibet. NOTE: the start date of c. 500 BCE is derived from Bon textual tradition (Norbu 2009, Bellezza 2008); no contemporaneous inscription attests Zhangzhung before 7th-century Old Tibetan sources. Zhangzhung coexisted with the nascent Yarlung dynasty of central Tibet until its absorption into the Yarlung-Tibetan empire c. 645 CE under Songtsen Gampo. Archaeological evidence (Bellezza 2008, 2014) documents extensive fortifications, cave complexes, and ritual rock art across the western plateau consistent with a complex pre-state or early state-level society.

2. Yarlung Dynasty (Early)127 BCE – 617 CE

   The early Yarlung Dynasty (traditionally 127 BCE–617 CE) occupied the Yarlung Valley (modern Shannan district, south of Lhasa) and the central Brahmaputra/Tsangpo corridor. The Yarlung chieftains progressively consolidated control over the central plateau, competing with Zhangzhung to the west and Sumpa to the northeast. Legendary founder Nyatri Tsenpo ("Neck-enthroned Lord") is attested only in later chronicles (the date 127 BCE derives from the Dunhuang manuscripts via Haarh 1969). The dynasty was not yet a unified empire — rather a confederation of plateau chiefdoms under Yarlung hegemony — but it provided the institutional foundation for Songtsen Gampo's imperial consolidation beginning c. 618 CE. Note that this phase overlaps temporally with Zhangzhung (both polygons display simultaneously, reflecting two coexisting polities).

3. Tibetan Empire (Formation)618 CE – 649 CE

   The formation phase of the Tibetan Empire under Songtsen Gampo (r. c. 618–650 CE). This phase encompasses the full Tibetan Plateau including the annexed Zhangzhung kingdom (c. 645), the subdued Sumpa in the northeast (Qinghai), and the expelled Tuyuhun beyond Kokonor. Songtsen Gampo moved the imperial capital from the Yarlung Valley to Lhasa, where he built the first palace on Red Hill (later site of the Potala) and the Jokhang Temple (c. 639) to house the Buddha image brought by his Nepalese wife Bhrikuti. He dispatched Thonmi Sambhota to India to create the Tibetan script (c. 632–640), enabling the translation of Buddhist texts and administrative record-keeping. His diplomatic marriages to Bhrikuti (Nepal) and Princess Wencheng (Tang China, 641) established the empire's international standing. Borders reached Tang China (east), Nepal and proto-Bhutanese polities (south), and the Ladakh/Gilgit zone (west).

4. Tibetan Empire (Peak)650 CE – 842 CE

   The Tibetan Empire at peak expansion (650–842 CE), one of the most formidable military powers in 7th–9th century Asia. Under Mangsong Mangtsen, Dusong Mangpoje, Mes Agtsam, and especially Trisong Detsen (r. 755–797), Tibet controlled the Tarim Basin and Silk Road segments (in competition with Tang, Arabs, and Türks), the Gansu/Hexi Corridor, and held Dunhuang from 781 to 848. In 763 CE Tibetan forces briefly captured Chang'an (Tang capital), installing a puppet emperor for approximately two weeks — the only foreign sack of a Tang capital. Trisong Detsen declared Buddhism the state religion (779), founding Samye Monastery. The Tang–Tibet Peace Treaty (821/822 CE, Lhasa Pillar) inscribed the boundary between the two empires. The empire's collapse began with the assassination of Langdarma in 842 CE.

5. Tibetan Fragmentation (Dark Period)842 CE – 1246 CE

   The "Dark Period" (sil bu'i skabs) following the assassination of Langdarma (842 CE). The Tibetan Empire fragmented into competing principalities ruled by descendants of the imperial line. The loss of central authority ended Tibetan control over the Tarim Basin, Dunhuang (retaken by the Dunhuang faction in 848), and the Gansu/Hexi Corridor. Central Tibet (Ü-Tsang) remained the demographic core while Kham and Amdo became semi-autonomous regional polities. This period saw the "second propagation" (phyi dar) of Buddhism from Amdo and Kham back to central Tibet in the 10th–11th centuries, ultimately restoring Buddhist institutional culture across the plateau. The western Guge Kingdom (successor to Zhangzhung) flourished as a center of Buddhist revival. The polygon covers the core plateau area under loose collective Tibetan identity, not a single unified polity.

6. Tibet under Mongol-Sakya Rule1247 CE – 1354 CE

   The Mongol-Sakya period (1247–1354 CE), during which central Tibet (Ü-Tsang) was governed by the Sakya lamas under nominal Mongol overlordship via the cho-yon (patron-priest) relationship established by Sakya Pandita and Godan Khan in 1247. The Sakya administrative system divided Tibet into myriarchies (khri skor) under a Yuan-appointed dpon chen (great administrator). Drogön Chögyal Phagpa (Sakya Pandita's nephew) was appointed imperial preceptor to Kublai Khan and designed the Phagpa script for Mongolian. The polygon covers Tibet plateau only — this script does NOT extend north into Mongolia, which is covered by the Mongol Empire entry in this dataset. The period ended when Changchub Gyaltsen of the Phagmodrupa clan overthrew Sakya dominance in 1354.

7. Phagmodrupa and Successor Regimes1354 CE – 1641 CE

   The Phagmodrupa consolidation period (1354–1641 CE) encompasses three successive hegemonic regimes in central Tibet: the Phagmodrupa (1354–c.1435), the Rinpungpa (c.1435–1565), and the Tsangpa (1565–1642). Each controlled central Tibet (Ü-Tsang) with varying reach into Kham and Amdo. Changchub Gyaltsen (r. 1354–1364) explicitly revived imperial-era Tibetan administrative forms, replacing the Mongol-Sakya myriarchy system. This era saw the founding of the great Gelugpa monasteries — Ganden (1409), Drepung (1416), Sera (1419) — by Je Tsongkhapa, establishing the institutional base for the future Dalai Lama institution. The period ended when Güshi Khan and the 5th Dalai Lama defeated the Tsangpa ruler in 1642.

8. Ganden Phodrang (Dalai Lama Government)1642 CE – 1950 CE

   The Ganden Phodrang government (1642–1950 CE), established by the 5th Dalai Lama Ngawang Lobsang Gyatso with the military support of Güshi Khan. This theocratic administration governed the full Tibetan plateau — Ü-Tsang, Kham, and Amdo — under the Dalai Lama institution. The Potala Palace (begun 1645) became the seat of government. Tibet came under nominal Qing suzerainty after the Dzungar invasion crisis (Qing troops entered Lhasa in 1720 to expel the Dzungars), but the Amban system (Qing residents in Lhasa) exercised limited real authority. Following the Qing collapse, the 13th Dalai Lama declared de facto independence (1913), and Tibet governed itself until the People's Liberation Army entered in October 1950. End year 1950 reflects the political end of the Ganden Phodrang's sovereignty; the government in exile continues.

Key Rulers

Key Events

Related Civilisations

Sources

1. Bellezza, John Vincent (2008) Zhang Zhung: Foundations of Civilization in Tibet(Comprehensive ethnoarchaeological study of the pre-Buddhist Zhangzhung kingdom of western Tibet, covering monuments, rock art, and Bon oral tradition. The primary scholarly reference for Zhangzhung territorial extent.)
2. Beckwith, Christopher I. (1993) The Tibetan Empire in Central Asia(Foundational study of the Tibetan Empire's military expansion into Central Asia, the Tarim Basin, and the Silk Road, including Tibetan-Tang, Tibetan-Arab, and Tibetan-Türk interactions. Essential for phases 3–4.)
3. van Schaik, Sam (2011) Tibet: A History(Authoritative single-volume history of Tibet from prehistory to the 20th century, written by a leading British Tibetologist. Covers all eight phases with balanced treatment of sources and modern scholarship.)
4. McKay, Alex (2003) The History of Tibet(Three-volume edited collection covering the full span of Tibetan history from early kingdoms through to modern times. The standard English-language reference compilation for Tibetan historiography.)
5. Haarh, Erik (1969) The Yar-lung Dynasty(Detailed study of the Yarlung Dynasty's legendary origins and kingship ideology, including the semi-mythical figures of Nyatri Tsenpo and the early Yarlung chieftains. Essential for Phase 2.)
6. Dotson, Brandon (2009) The Old Tibetan Annals(Annotated translation of the Old Tibetan Annals (Dunhuang MS Pelliot tibétain 1288), the earliest extant Tibetan court records (c. 7th–9th century). Primary source for imperial-era events, rulers, and territorial administration.)
7. Goldstein, Melvyn C. (1989) A History of Modern Tibet, 1913-1951(Authoritative political history of Tibet's de facto independence period (1912–1950) and the process of Chinese absorption. Standard reference for Phase 8 (Ganden Phodrang modern period).)
8. Norbu, Namkhai Chogyal (2009) Light of Kailash: A History of Zhang Zhung and Tibet(Scholarly history by the Bon master Namkhai Norbu drawing on Bon textual tradition for the Zhangzhung and early Tibetan periods. Treated as a primary-source category for the indigenous textual perspective on Zhangzhung.)
9. Richardson, Hugh E. (1985) A Corpus of Early Tibetan Inscriptions(Critical edition and translation of imperial-era Tibetan stone inscriptions including the Lhasa Zhol pillar (764 CE), the Do-ring pillar (764 CE), and the Tang–Tibet Peace Treaty pillar (822/823 CE). Authoritative primary source for imperial expansion and treaty events.)
10. Kapstein, Matthew T. (2006) The Tibetans(Broad cultural and religious history of the Tibetan people from the imperial period through the modern era. Excellent coverage of Buddhism's introduction, the Ganden Phodrang, and the role of the Dalai Lamas.)