One of the deep questions in economics is why some countries are rich and others are poor. It is widely believed that institutions such as clear and enforceable property rights are important to economic growth. Still, debates rage: Do culture, history, government, education, temperature, natural resources, cosmic rays make the difference? The reason it’s hard to resolve this question is that we have no controlled experiments comparing otherwise similar places with different sets of legal and economic institutions. In new research, James Feyrer and Bruce Sacerdote, both of Dartmouth College, consider the effect of a particular aspect of history—the length of European colonization—on the current standard of living of a group of 80 tiny, isolated islands that have not previously been used in cross-country comparisons. Their question: Are the islands that experienced European colonization for a longer period of time richer today? […]
Feyrer and Sacedote’s key findings are that the longer one of the islands spent as a colony, the higher its present-day living standards and the lower its infant mortality rate. Each additional century of European colonization is associated with a 40 percent boost in income today and a reduction in infant mortality of 2.6 deaths per 1,000 births.
By itself, the relationship between longer colonization and higher living standards could arise either because European contact raised living standards or because European explorers colonized the most promising islands first. The authors cleverly reject the latter possibility by noting that the sailing of the day relied on wind, which meant that islands located where wind is weak were “less likely to be discovered, revisited, and colonized by Europeans.” Thus, wind conditions, rather than island promise, determined which islands were colonized first, and so which islands remained as colonies longer. The relationship between colonial duration and wealth reflects the effect of colonization on material living standards, rather than the other way around.
So, what did the Europeans do right? The authors conclude that there’s no simple answer. The most plausible mechanisms include trade, education, and democratic government. When the study directly measures these factors, some of them help to explain income differences among islands—for example, the places that traded only basic agricultural products in colonial times now have lower living standards. But even after accounting for these concrete determinants, longer European colonization has some extra pro-growth effect. Exposure to European colonizers, it appears, benefits living standards for reasons apart from the direct effects of government, education, and markets. […]
The authors also compare the experiences of separate Pacific islands with eight different colonizers: the United States, Britain, Spain, Denmark, Portugal, Japan, Germany, and France. Their verdict is that the islands that are best off, in terms of income growth, are the ones that were colonized by the United States—as in Guam and Puerto Rico. Next best is time spent as a Dutch, British, or French colony. At the bottom are the countries colonized by the Spanish and especially the Portuguese.
Cool work by Friends Feyrer and Sacerdote, not least because so politically incorrect…
Two questions arise:
Doesn’t some of the work of Alberto Alesina, and I think Mr. Sacerdote with him, suggest that islands often have significant advantages in economic development anyway — all that Size of Nations stuff — so how badly do you have to screw yourselves over to be a backwards island nation?
And isn’t the divider between the more and less successful colonies generally which were colonized by Protestant nations and which by Catholic?