“Modern economic growth is the greatest creator of human welfare in history — and also the greatest destroyer of natural systems.” — Vaclav Smil
The economic gap between the world’s richest and poorest countries is almost incomprehensibly large. Luxembourg’s GDP per capita exceeds $130,000 per year. The Democratic Republic of Congo’s is around $500. That is a 260-fold difference — between people on the same planet, in the same era, subject to the same gravity and breathing the same air.
This gap did not exist in 1800. In the pre-industrial world, standards of living varied considerably across regions, but the gap between the richest and poorest countries was perhaps 4 or 5 to 1. The great divergence — the explosion of inequality between nations — was caused directly by the Industrial Revolution, which allowed some countries to generate wealth at exponential rates while others were left behind or actively exploited.
GDP per capita is an imperfect but indispensable measure. It captures average material living standards — purchasing power, consumption, access to goods and services — in a single comparable number. More sophisticated measures like the Human Development Index (HDI) incorporate education and life expectancy, but they correlate strongly with GDP per capita because wealth funds the institutions that improve health and education.
Key benchmarks from recent data:
The most remarkable economic story of the past 60 years is the rise of East and Southeast Asia. Japan first demonstrated that a non-Western country could achieve full industrialization. South Korea, Taiwan, and Singapore followed. China’s growth since 1980 has no precedent in human history.
South Korea’s transformation is particularly striking because it happened within living memory. In 1960, South Korea’s per capita income was comparable to Ghana’s — approximately $1,200 in today’s dollars. Today it exceeds $35,000. This 30-fold increase occurred in roughly 50 years, a single human lifetime.
What drove it? Smil points to several factors, but resists simple narratives: heavy investment in education, strategic industrial policy (targeting specific sectors for government support), a high savings rate that funded domestic investment, and integration into global trade networks. The “Korean miracle” is real, but it required sustained political will, cultural alignment, and fortunate timing in global markets.
China’s growth since 1980 has been even more dramatic in absolute terms — over 800 million people lifted out of poverty, the largest reduction in absolute poverty in human history. China’s per capita income grew from approximately $200 in 1980 to over $12,000 today — a 60-fold increase in 40 years.
Smil is careful to note that GDP per capita obscures as much as it reveals. The average income of a country says little about how that income is distributed. The United States has the world’s highest GDP in absolute terms and one of the highest per capita — but also one of the highest levels of income inequality among wealthy nations.
The Gini coefficient measures income inequality on a scale from 0 (perfect equality) to 1 (one person owns everything). Key comparisons:
The world’s richest 1% now own approximately 38% of global wealth. The richest 10% own 76%. These numbers have been increasing in most countries since the 1980s.
This is one of the most contested questions in all of economics and political science. Smil, characteristically, resists ideology and looks at the data. The correlates of prosperity are clear even if causation is debated:
If you were designing a country from scratch to maximize human welfare — not GDP — what would you prioritize? What does the data from the world’s most successful development stories tell you?