Diego Macera

In 2028, the median person on Earth will live on more than $10 a day for the first time in history (figures adjusted for inflation and for differences in purchasing power across countries). In the last decade alone, the share of people above this threshold has risen from 41.3% in 2016 (3.11 billion) to 48.7% in 2026 (4.03 billion). Think about that for a second: we have pushed nearly 900 million people over this threshold in ten years, around 90 million people a year (slightly above the population of Turkey). At the very bottom, we have also seen progress, though slower. In 2016, 12.6% of the world lived below $3 a day (947 million people). In 2026, the figure fell to 10.0% (826 million). This fall is harder to achieve because the poorest countries also have fast population growth. As fertility falls there, and I think it is already falling, we will cut poverty much faster. You are probably thinking that $10 a day is not a demanding threshold. True. But in 1990, yesterday in historical terms, only 1.42 billion people lived above it. And this is not just China: 2.6 billion people have crossed the $10 line. On the other hand, in 1990, 2.20 billion people lived below $3 a day. I checked these figures today because I start teaching Global Economic History at Penn this Wednesday, and I wanted to update the numbers I use. As Joel Mokyr instructs us: “The responsibility of economic historians is to remind the world what things were like before 1800. Growth was imperceptibly slow, and the vast bulk of the population was so poor that a harvest failure would kill millions. Almost half the babies born died before reaching age 5, and those who made it to adulthood were often stunted, ill and illiterate.” (“What Today's Economic Gloomsayers Are Missing,” 2014.) This will be my first lesson to the students on Wednesday: we live in times of historically unprecedented prosperity, and, by and large, things are getting much better every year.

How has the Spanish economy performed over the very long run? To answer, I use Leandro Prados de la Escosura’s (@LdelaEscosura) data on real GDP per capita from 1277 to 2024. I express Spain’s figure as a ratio to Britain’s, since Britain was the first economy to achieve modern economic growth, from around 1660, and has been the leader, or close to it, ever since. Spain, within its present borders, was prosperous in the Late Middle Ages, well ahead of Britain, then a peripheral corner of Europe. The Black Death and its aftermath hit Spain harder, and by 1360, the two economies had converged. That parity held until 1600, when Spain began a long decline, in absolute terms (on the eve of the French Revolution, it was barely above its 1600 level, after a deep slump in between) and in relative terms (Britain pulled steadily away). The standard explanations, the Habsburg wars, and the serial bankruptcies run into one problem. They can account for the poor performance between 1550 and 1650, but not for the stagnation between 1650 and 1789. 140 years of stagnation is far more than wars and debt under the Habsburgs can explain. The series also shows that Spain did not benefit from its empire. That is a problem for every theory tying colonies to modern growth. At most, one can argue that colonies were a necessary condition for takeoff (I do not believe even that, but leave it for another day). One cannot argue that they were sufficient. The period from 1789 to 1936 was no kinder. The economy grew a little, and Spain built a modern but unfinished liberal state. Yet it never closed the distance to Britain. It is hard not to read the period from 1789 to 1936 as a national failure and the Civil War as its final consequence. The recent efforts of some historians to paint those years in brighter colors strike me as unfounded. Spain did not fail at modernization as badly as China, but it did not succeed. A deeply corrupt dynasty, closed and incompetent elites in Madrid, Barcelona, and Bilbao, and an economic policy built on intervention and protection (by 1920, Spain was the most protectionist economy in the Western world, so much for the friends of protection) together made the country a basket case. A cruel civil war left Spain at its historical low, with just 31% of the British GDP per capita. The foreign visitors who arrived in the early 1950s found a poor, backward country. Policy in the first twenty years of the dictatorship was awful. Autarky was not so much imposed by the Allies as chosen. Spain’s rulers, using their quasi-fascist Weltanschauung, believed growth would come from state intervention, closed markets, and unorthodox fiscal and monetary policy. Then, in 1959, policy changed. Spain adopted a more orthodox fiscal and monetary policy and opened to foreign investment and trade. The results were spectacular. For forty years, Spain grew briskly and became the modern country it is today. By 2001, it had reached 77% of British GDP per head. But the internal contradictions of two things eventually became binding: the growth model launched in 1959, and the political regime created by the 1978 constitution. By 2024, Spain had slipped back to 74% of British GDP per head. This is worse than it looks. Britain itself has done poorly over the past twenty years, and losing ground to a weak performer is a bad sign. Spain stands at a crossroads, economic and political. The country’s foundations no longer work, but its political and business elites have failed to understand this fundamental reality. A good grasp of its economic history helps make sense of its present predicament.

At the FT today, John Burn-Murdoch (@jburnmurdoch) has an excellent article describing how fertility is declining everywhere at the same time: ft.com/content/fba35eca-df3a… He quotes me and, even better, draws the reader’s attention to my work with Gustavo Ventura, @King_ofSweden, and Wen Yao on “The Wealth of Working Nations.” If I may suggest, reading the article alongside the podcast I did with Derek Thompson, @DKThomp, will give you a good overview of the issue. BTW, I have decided to write something longer about all this over the summer with Nezih Guner, @NezihGuner. Hopefully, the gods of productivity smile on us, and we can have a draft by early fall.