Conflict dossier · #45 of 120
Dossier 45 — Opium Wars (1839–1842; 1856–1860)

Early Modern Tier 2
Dossier 45 — Opium Wars (1839–1842; 1856–1860)
Theater: Coastal and riverine China — Guangdong, the Yangtze valley (First War); Tianjin, Beijing, and the north China coast (Second War, incl. the Anglo-French expedition). Belligerents: The Qing Empire vs. the British Empire (First War); Britain and France (Second War), with the United States and Russia involved diplomatically. Validation tier: Tier 2 (moderate) — British figures documented from official reports; Chinese losses estimated; no secure aggregate for both wars.
Overview
Two wars arising from Britain's determination to force open Chinese markets — above all to the opium trade — and the Qing state's attempt to suppress it. The First Opium War (1839–1842) followed Commissioner Lin Zexu's seizure and destruction of British opium at Canton; British naval and expeditionary power forced the Treaty of Nanking (1842), ceding Hong Kong and opening five treaty ports. The Second (Arrow) War (1856–1860) ended with the Treaties of Tientsin and the Convention of Peking, legalizing the opium trade, opening more ports, and permitting foreign legations in Beijing — after the Anglo-French sack and burning of the Summer Palace (Yuanmingyuan, 1860).
Causes (attributed)
- Trade and opium: Britain's trade deficit with China and the East India Company's opium revenues; Qing prohibition enforcement at Canton threatened a lucrative trade (MIT Visualizing Cultures).
- Sovereignty and legal jurisdiction: British insistence on diplomatic equality, extraterritoriality, and an end to the Canton system vs. Qing claims of tributary superiority.
- Contested: whether the wars were "about" opium or about free trade and diplomatic recognition — British apologists stressed the latter; Chinese historiography treats the wars as the founding trauma of the "century of humiliation," a framing some Western historians qualify while accepting the wars' coercive character.
Course (brief, neutral)
In the First War, British steam-powered naval forces seized coastal positions, took Canton, Amoy, Ningpo, and Shanghai, and ascended the Yangtze to Nanking, forcing the 1842 treaty. The Second War began with the Arrow incident (1856); Anglo-French forces took the Taku forts, occupied Tianjin, and after the breakdown of negotiations marched on Beijing, burning the Summer Palace as a reprisal; the Convention of Peking (1860) ended the war.
Casualties
- First War (British official data, cited by MIT Visualizing Cultures from an 1847 British-government report): UK combat casualties 69 killed, 451 wounded; estimated Chinese casualties including deaths 18,000–20,000; official hospitalization data recorded 448 British deaths (disease) between 13 July and 31 December 1840.
- Second War: no comparably documented aggregate found in this research pass's searches — an honest gap.
- No secure combined aggregate for both wars exists in the sources surfaced; any combined total is UNVERIFIED.
Outcome and legacy
- Treaty of Nanking (1842): cession of Hong Kong, five treaty ports, indemnity, extraterritoriality; the "unequal treaties" system began.
- Treaties of Tientsin (1858) and Convention of Peking (1860): legalization of the opium trade, foreign legations in Beijing, Kowloon ceded to Britain, and Russia's acquisition of the Maritime Province.
- Legacy: in Chinese national memory the wars open the "century of humiliation"; the burning of Yuanmingyuan remains a potent symbol; in Britain the wars were long treated as commercial-diplomatic episodes, a view increasingly revised.
Historiography pulse
- Consensus: British military-technological superiority; the wars as forced market-opening; the indemnity and treaty-port system as structural consequences.
- Debates: casualty figures for Chinese losses (the 18,000–20,000 estimate's basis); the morality and legality of the opium trade in Victorian Britain; the "humiliation" narrative's uses in modern Chinese state discourse.
- Notable scholarship: links were not verified in this research pass.
UNVERIFIED list
- Any combined death total for both wars.
- Second War casualty aggregates (British, French, Chinese).
- The precise basis of the 18,000–20,000 Chinese casualty estimate.
Sources
- British official figures (First War): https://visualizingcultures.mit.edu/opium_wars_01/ow1_essay_03.pdf
- Background: http://visualizingcultures.mit.edu/opium_wars_01/ow1_essay.pdf
Images
Sources
- British official figures (First War
- Background