When reading from Wikipedia some interesting issues contributed to this (I know, I know...don't use Wikipedia): "The depressions of 1873–77 and 1890–91 played a crucial role in fostering the rise of industry: timidly in the 1870s and more decisively in the 1890s, industry grew with each crisis in response to the need of a damaged economy to improve its trade balance through import-substitution. By 1914, about 15% the Argentine labour force was involved in manufacturing, compared to 20% involved in commercial activities. In 1913, the country's income per head was on a par with that of France and Germany, and far ahead of Italy's or Spain's. At the end of 1913, Argentina had a
gold stock of £59 million, or 3.7% of the world's monetary gold, while representing 1.2% of the world's economic output."
Sounds like "...a combination of the Panama canal opening in 1913/14 meant the South American economies declined, as investors turned their attention to Asia and the Caribbean." Then WWI hit and everything went terrible because exports were impeded by the European conflict and then foreign investment in Argentina came to a complete standstill.
Also, "The
Roca-Runciman Treaty of 1933 gave Argentina a quota of the British market for exports of its primary products, but the discriminatory British imperial tariffs and the effects of
deflation in Britain actually led to a small decline of Argentine exports to Great Britain."
So to make a play on this issue, you've got to somehow make the impact of the Panama canal and WWI go away, make the US Government not disregard their exports in the 20's, and find a different source of export partner (other than England). If you can do this, then you can avoid the series of dictoratorships that crippled the economy.