Sui-Tang Transition Period

The Sui-Tang Transition Period (613–628) was a brief interregnum in Chinese history containing the collapse of Suiball to the rise of Tangball.
Suiball's failure to respond to crises at home led to the rise of various local agrarian rebel factions whose leaders declared themselves Princes or Emperors of de facto independent regimes.
Despite stubborn resistance to Tang unification, the last of these liminal states was anschlussed by Tangball in 628, marking the end of the tumultuous era.
==History==
===Fall of Suiball===
Despite Suiball's achievements, its populace grew increasingly restless as Suiball continued to conscript men into perilous wars against Goguryeoball. By 614, agrarian rebels became so organised that Suiball's forces could not reliably defeat them."Emperor Yang of Sui." Wikipedia, Wikimedia Foundation, 1 December 2023‎, https://en.wikipedia.org/wiki/Emperor_Yang_of_Sui
Suiball's inability to exercise authority, alongside its failure to provide relief against banditry (due to a lack of funds and organisation), led to various insurgencies throughout the empire. By 617, while some warlords nominally viewed Suiball's Emperors as legitimate Sons of Heaven, Suiball's authority had been largely undermined.
===The Rise of Tangball===
In 617, Suiball's governor of Taiyuanball, Li Yuan (李淵), rebelled against Suiball and began building his power base. Li quickly consolidated his control over Northwestern China, conquering Chang'anball and proclaiming himself Emperor of Tangball in 618. Li is known as Emperor Gaozu of Tang (唐高祖).
Tangball attacked and defeated Xue Qinball, and then gained the submission of Li Weiball in 619. Later in 619, warlord Wang Shichong (王世充) forced the last Emperor of Suiball to abdicate and established his own state of Wang Zhengball. Tangball instigated a popular uprising against Li Liangball, and anschlussed its territory. Around this time, the governor of Beijingball also submitted to Tangball.
===Unification Under Tangball===
Tangball faced multiple threats in 620, namely Dou Xiaball and Dingyangball. Despite briefly losing control of Taiyuanball, Tangball rebounded and conquered Dingyangball, Dou Xiaball, and Wang Zhengball in succession. In spite of these victories, Tangball faced two rebellions in 621 after Emperor Gaozu executed popular warlord Dou Jiande (竇建德).
Also in 621, Tangball conquered Xiao Liangball and Li Wuball. In 623, Lin Chuball was conquered. Notwithstanding another rebellion against Tang rule in 623, Tangball had essentially unified all of China by this point.
In 626, Emperor Gaozu empowered his son—Prince of Qinball, Li Shimin (李世民)—as emperor, becoming Taishang Huang (太上皇; retired emperor). Li Shimin is known as Emperor Taizong of Tang (唐太宗). Emperor Taizong completed the reunification of China in 628, after Liang Liangball was isolated from its friends in Eastern Tujueball. Tangball invaded and anschlussed it, formally ending the Sui-Tang Transition Period.
==Combatants / Participants==
===Suiball===
* Suiball (613–619)
===Tangball===
* Tangball (from 617)
===Tujue===
* Eastern Turkic Khaganateball (intermittently)
===Other Factions===
* Wang Yanball (615–618)
* Dou Xiaball (619–621, 622–623)
* Foball (618–618)
* Yongleball (617–618)
* Gao Yanball (619–620, 621–624)
* Li Liangball (618–619)
* Li Wuball (619–621)
* Liang Liangball (618–628)
* Lin Chuball (617–622)
* Dingyangball (617–620)
* Shen Liangball (619–620)
* Wang Zhengball (619–621)
* Xue Qinball (617–618)
* Yuwen Xuball (617–620)
* Zhu Chuball (618–619)
* Xiao Liangball (618–621)
* Li Weiball (617–618)
* Fu Songball (623–624)
* Xu Luball (621–623)
==Gallery==
To Kill a Dynasty.png|"To Kill a Dynasty" by Reddit user u/kahn1969.
==References==
Category:Wars
Category:Wars after 0 AD
Category:Wars before WWI
Category:Wars before Cold War
Category:Wars before 2000 AD
Category:Wars involving Chinaball