In 1865, Argentina was already one of the top 25 nations by per capita income. By 1908, it had surpassed Denmark, Canada and the Netherlands to reach 7th place—behind Switzerland, New Zealand, Australia, the United States, the United Kingdom and Belgium. Argentina's per capita income was 70% higher than Italy's, 90% higher than Spain's, 180% higher than Japan's and 400% higher than Brazil's.[65]
In 1930, Yrigoyen was ousted from power by the military led by José Félix Uriburu. Although Argentina remained among the fifteen richest countries until mid-century, this coup d'état marks the start of the steady economic and social decline that pushed the country back into underdevelopment.
Yeah... the thing about steep learning curves is: I might as well be reading quantitative/modeling & simulation approaches to history at that point. Because eventually that could turn into contributing back to the field.