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Entry 111 of 240War

Vietnam Breaks From China

938 CE/Southeast Asia/Đại Việt
Today Northern Vietnam (the Bạch Đằng river)Span Đại Việt · 938–1804 CE

After a thousand years as a Chinese province, Vietnam won its independence at the Bạch Đằng river, where a general planted iron-tipped stakes in the riverbed at low tide, lured the Chinese fleet in on the rising water, and destroyed it as the tide fell and the hulls came down on the spikes. Vietnam kept Chinese script, Confucian administration, and the examination system — and spent the next thousand years refusing to be governed by China, repelling invasions from the Song, the Mongols, and the Ming.

◆ Worth knowingThe stake trick worked so well it was used again to smash a Mongol fleet on the same river in 1288 — the Mongols, who had taken most of Eurasia, lost to the same tidal ambush their predecessors had lost to 350 years earlier.
◆ The mechanismRevolution from hardship

Hardship plus a sudden opening (weak state, lost war, fiscal collapse) lets those who bear it overthrow the order — usually installing a new elite.

Also: Military-technological disruption · State formation & institutional founding · Legitimating-narrative collapse

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