What Happened To Argentina's Economy?

NYTIMES/ECONOMIX BLOG/Wonkish Economic Article/Edward L. Glaeser, economics professor at Harvard.
"A century ago, there were only seven countries in the world that were more prosperous than Argentina (Belgium, Switzerland, Britain and four former English colonies including the United States), according to Angus Maddison’s historic incomes database. In 1909, per capita income in Argentina was 50 percent higher than in Italy, 180 percent higher than Japan, and almost five times higher than in neighboring Brazil. Over the course of the 20th century, Argentina’s relative standing in world incomes fell sharply. By 2000, Argentina’s income was less than half that of Italy or Japan."