When and why did Hong Kong become a British colony?

When and why Hong Kong became a British colony

Hong Kong became a colony of Great Britain when the British began to actively import opium into China from the beginning of the 19th century. And the Qing court in 1839 imposed a ban on opium, then the British began the first opium war against China.

So during the occupation by the British in 1841, Hong Kong became a colony of Great Britain, and at the end of the war in 1842 it passed under British sovereignty. With the occupation of the British capital, the capital of China increased in 1931 to 880,000 inhabitants.