Tibet - Era of Fragmentation
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Was an era of disunity in Tibetan history lasting from the death of the Tibetan Empire's last emperor, Langdarma, in 842 until Drogön Chögyal Phagpa became the Imperial Preceptor of the three provinces of Tibet in 1253, under the Yuan dynasty.
Chronology
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January 931: Ngari Khorsum splits into three kingdoms under Kyide Nyimagon's sons: Purang-Guge Kingdom controlled by Tashigon, Maryul controlled by Lhachen Dpalgyimgon, Zanskar and Spiti controlled by Detsugon.
January 1266: Mangyül Gungthang was a Tibetan kingdom established under Sakya overlordship in Southwest Tibet around 1265.
January 1255: Mongol invasions of Tibet: Qoridai invades Tibet as far as Dangquka.
January 844: Karasahr and Kucha are occupied by the Kingdom of Qocho.
January 851: Zhang Yichao took Hami, Ganzhou and Suzhou.
January 852: Khotan becomes independent.
January 867: Tibetans retreat to the Tibetan plateau, leaving the remnant territories of Yumtän to the Tang.
January 926: The kingdom of Ngari Khorsum is founded by Ösung's grandson, Kyide Nyimagon, in the capital of Purang.
January 998: Tsongkha was a Tibetan theocracy that ruled northeastern Tibet from 997.
January 1073: The Song dynasty gains control of Wushengjun.
January 1073: Purang-Guge Kingdom splits into independent Guge and Purang, ruled by the brothers Tsede and Tsensong respectively. Another brother Tsende may have founded the Khasa Kingdom.
January 1221: The Khasa Kingdom expands into the territory of Garhwal and Kumaon.
January 1255: The Kingdom of Purang was conquered by the Mongols.
January 843: When king Langdarma died, the Tibetan Empire entered thr Era of Fragmentation. Tibet is split between Langdarma's sons Ösung, in the west, and Yumtän, in the east.
January 968: He ruled the merge of the kingdoms of Tashigon and Detsugon, covering the regions of Purang and Guge and Zanskar, Spiti and Lahaul and Upper Kinnaur. He then ruled over the combined Purnag-Guge Kingdom from 967.
January 911: Popular revolt broke Tibet into numerous principalities: Tsangto Yul, Rutsham Zhunye, Panyul, Yarlung, Tamshul Lhodrak, Cho, and Chokhor.
