Transition from Sui to Tang

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Transition from Sui to Tang
Major uprisings in the eve of the fall of the Sui dynasty
Date 613-628 Location China Result China united by the Tang dynasty
Belligerents
Tang dynasty	Sui dynasty (until 618) Qin Liang Deng Yang Zheng Xia Han Dong Liang	Goguryeo Eastern Turkic Khaganate
Casualties and losses
At least 1 million deaths

The transition from Sui to Tang (613–628), or simply the Sui-Tang transition^[1], was the period of Chinese history between the end of the Sui dynasty and the start of the Tang dynasty. The Sui dynasty's territories were carved into a handful of short-lived states by its officials, generals, and agrarian rebel leaders. A process of elimination and annexation followed that ultimately culminated in the consolidation of the Tang dynasty by the former Sui general Li Yuan. Near the end of the Sui, Li Yuan installed the puppet child emperor Yang You. Li later executed Yang and proclaimed himself emperor of the new Tang dynasty.

The transition started roughly around the year of 613 when Emperor Yang of Sui launched his first of three campaigns against Goguryeo, leading to a number of desertions in the army and the start of agrarian revolt against the Sui. The transition ended in 628, when Emperor Gaozu's son Li Shimin annexed the agrarian rebel ruler Liang Shidu's state of Liang, thereby once again unifying most of China under a single power.