Answer:
The Opium War, usually referred to as the First Opium War, often referred to as the First Sino-British War or the "Trade War", was an unjust war of aggression launched by Britain against China from 1840 to 1842, and it was also the beginning of China's modern history of humiliation.
In 1840 (the twentieth year of Daoguang), the British government decided to send an expeditionary force to invade China under the pretext of Lin Zexu's Humen selling tobacco. In June 1840, 47 British warships and 4,000 army troops, led by Rear Admiral George Yilu and Commercial Supervisor Yi Lu in China, arrived outside the mouth of the Pearl River in Guangdong one after another, blockaded Haikou, and the Opium War began.
The Opium War ended with China losing and paying reparations to cede land. China and Britain signed the Treaty of Nanjing, the first unequal treaty in China's history that lost power and humiliated the country. China began to cede land to foreign countries, pay reparations, and negotiate tariffs, seriously jeopardizing China's sovereignty, began to degenerate into a semi-colonial and semi-feudal society, lost its independent status, and promoted the disintegration of the small-scale peasant economy. At the same time, the Opium War also opened a new chapter in the history of the resistance of the Chinese people to foreign aggression in modern times.
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