The backstory to why Hong Kong ended up still being a British colony after the end of World War II is interesting, and I did not previously know the details. At the time it probably appeared to be a small matter, but it did have big long-term consequences. This account is a from a recent review essay by Stephen Kotkin, Stalin’s biographer, in Foreign Affairs:

Arguably, with the exception of the Soviet capture of Berlin in May 1945 and the stern telegram that U.S. President Harry Truman sent to Stalin in August of that year warning him not to invade Hokkaido (one of Japan’s four main islands), the physical reoccupation of Hong Kong by the British in 1945 exceeded any other wartime episode in its strategic implications.

When Japan’s surrender suddenly appeared imminent in the summer of 1945, surprising Washington, the Truman administration hastily accelerated work on a plan for the hand-over of Japanese-occupied territories and assigned the acceptance of Japan’s surrender of Hong Kong not to the British but to Chiang Kai-shek’s Chinese Nationalist government. The British, however, undertook furious military and political preparations to reclaim Hong Kong for themselves. U.S. officials wanted to satisfy their British allies but also allow Chiang to save face, and so they cleverly suggested that the British could accept the surrender on behalf of the Chinese government. But the British refused that offer, and eventually, Washington acquiesced. Chiang acquiesced as well, dependent as he was on U.S. military and logistical support to reclaim other areas of China. The upshot was that Hong Kong passed from the Japanese back to the British and remained that way even after 1949, when the Communists triumphed over Chiang’s Nationalists in the Chinese Civil War but shrank from attempting to expel the British from the strategic southern port.

Had the British acquiesced rather than the Americans and Chiang, history would have played out very differently. As it was, the communist regime in Beijing was able to take extraordinary advantage of something it would not otherwise have possessed: a world-class international financial center governed by the rule of law. During the period of Deng’s reforms, British Hong Kong ended up funneling indispensable foreign direct investment into mainland communist China—from Japan and Taiwan, especially.

People often ask why Soviet Premier Mikhail Gorbachev, when attempting to reenergize the Soviet economy in the second half of the 1980s, did not follow the successful Chinese approach to reforms. Beyond the immense gulf between a highly urbanized, heavily industrialized country and a predominantly rural, agricultural one, the Soviet Union had no Hong Kong to attract and direct incoming investment according to market, rather than political, considerations. No British Hong Kong, no Chinese miracle.