Jiedushi (Military Commissioner) Rebellions

What happened

During the Tang Dynasty's decline (755-880), the emperor granted military governors (jiedushi) increasing autonomy over provinces. Ambitious generals like An Lushan used this authority to build independent power bases. An Lushan's rebellion (755-763) devastated China, involved foreign allies (including the Uighur Turks), and killed millions. Though crushed, the rebellion permanently weakened central authority. Subsequent rebellions by regional military governors (776, 781-806, 835-840) fragmented the empire further. The emperors could not reclaim provincial control; by 880, the government had collapsed into effective regional autonomy. This period saw the rise of warlords who would establish the Five Dynasties.

Why it mattered

The jiedushi rebellions transformed China from a centralized empire to a fragmented confederation of regional powers. The Tang Dynasty never recovered its early strength, leading eventually to its fall (907) and the chaotic Five Dynasties period. The rebellions demonstrated the vulnerability of imperial systems when provincial authorities gain too much independence. The period saw significant technological and cultural achievements despite political chaos.