The Partition of Korea divided a formerly united country into U.S.- and Soviet-administered spheres at the 38th parallel in 1945. In the book’s account, that line became more than a geopolitical boundary: it marked the beginning of sharply different institutional paths, whose cumulative consequences were visible in the contrasting prosperity, health, and everyday lives of North and South Koreans.

Division and Divergent Systems

As the Second World War drew to a close, Japan’s colonial rule in Korea began to collapse. Within a month of Japan’s unconditional surrender on August 15, 1945, the peninsula was divided at the 38th parallel. The United States administered the South and Russia the North. The partition thus established separate political settings before either society’s later economic trajectory had taken shape.

The book emphasizes that the stark disparity that followed did not exist before the end of the war. In the South, Syngman Rhee, educated at Harvard and Princeton and firmly anticommunist, was elected president in 1948 with significant U.S. support. The country was not democratic: Rhee and his successor, General Park Chung-Hee, were authoritarian presidents. Yet both governed a market economy that recognized private property. After 1961, Park directed state credit and subsidies toward firms that succeeded, while investment in education helped produce high literacy and schooling. Businesses used that relatively educated workforce, investment and industrialization policies, export opportunities, and technology transfer to fuel rapid growth.

North of the line, Kim Il-Sung established himself as dictator by 1947 and, with Soviet assistance, introduced a rigid centrally planned economy under the Juche system. Private property was outlawed and markets banned. Freedoms were restricted not only in economic life but across other spheres, with exceptions for the small ruling elite around Kim and, later, his son and successor Kim Jong-Il. In the book’s comparison, the divide was therefore not simply between two levels of wealth: the governments on either side organized economic life and access to opportunity in fundamentally different ways.

War, Separation, and Reunion

The uneasy Cold War peace shattered in June 1950, when the North Korean army invaded the South. North Korean forces made major gains and captured Seoul, but by autumn they were in retreat. Amid that reversal, Hwang Pyŏng-Wŏn and his brother were separated. Hwang avoided conscription by hiding, remained in the South, and worked as a pharmacist. His brother, a doctor treating wounded South Korean soldiers in Seoul, was taken north as the North Korean army withdrew.

The brothers met again in Seoul in 2000, after fifty years apart, when the two governments agreed to a limited family-reunification program. Their reunion brings the national division into the intimate scale of family life: the political boundary had not only separated administrations but had kept brothers apart for half a century.

Their conversation made the distance between the two systems tangible. Hwang had a car; his brother did not. Asked whether he had a telephone, the brother said no, although his daughter, who worked at the Foreign Ministry, had one—and could not make calls without knowing the code. Hwang recalled that people from the North at the reunion were asking for money, and offered some to his brother. His brother refused, fearing that the government would demand the money if he returned with it.

A threadbare coat carried the same institutional constraint in a quieter form. Hwang suggested that his brother leave the worn coat behind and travel back wearing a better one. His brother explained that the coat belonged to the government and had only been lent to him for the visit. At their parting, he seemed uneasy and repeatedly nervous, as if someone might be listening. He said that he lived well, but Hwang thought he looked awful and was thin as a rake. These details show how political control reached beyond formal rules to shape what a visitor could keep, say, or carry home.

The Material Gap

The book sets the brothers’ encounter against a much wider divergence. South Korean living standards came to resemble those of Portugal and Spain; North Korean living standards were comparable to those of a sub-Saharan African country, at about one-tenth of the South’s average. North Koreans could also expect to live ten years less than their southern cousins. A satellite map of nighttime light makes the contrast immediately visible: South Korea blazes with light, while North Korea is almost entirely dark because of its lack of electricity.

By the late 1990s, roughly half a century of growth in the South and stagnation in the North had produced a tenfold gap between the two halves of the once-united country. The northern economy’s collapse led to the starvation of millions. The contrast is not presented as an outcome explained by ancient cultural or geographic differences, or by ignorance; the book directs attention instead to the institutions that structured incentives, property, markets, and political power.

A Critical Juncture, Not a Predestined Outcome

The partition is significant in the book’s argument as a historical turning point whose consequences depended on the institutions built on either side. It does not make the later contrast automatic: the same initial boundary led into distinct economic arrangements, and those arrangements shaped how people could invest, trade, work, and seek a better life. The division’s meaning emerges through this sequence—from the postwar split, to institutional divergence, to radically unequal outcomes.

The book places Korea within a broader account of critical junctures and institutional change. Major disruptions can alter the balance of economic and political power, but their effects interact with existing arrangements rather than dictating a single outcome. Institutional differences themselves can accumulate through contingent conflicts and gradual drift; they are not a predetermined march toward prosperity or poverty. In Korea, the postwar partition made the contrast between two systems unusually clear, while the reunion of Hwang and his brother supplied a human measure of what that divergence meant: a shared origin, fifty years of separation, and profoundly different conditions on either side of the 38th parallel.