BREAD Working Paper No. 576, December 2020

Country of Women? Repercussions of the Triple Alliance War in Paraguay

Skewed sex ratios often result from episodes of conflict, disease, and migration. Their persistent impacts over a century later, and especially in less-developed regions, remain less understood. The War of the Triple Alliance (1864–1870) in South America killed up to 70% of the Paraguayan male population. According to Paraguayan national lore, the skewed sex ratios resulting from the conflict are the cause of present-day low marriage rates and high rates of out-of-wedlock births. We collate historical and modern data to test this conventional wisdom in the short, medium, and long run. We examine both cross-border and within-country variation in child-rearing, education, labor force participation, and gender norms in Paraguay over a 150 year period. We find that more skewed post-war sex ratios are associated with higher out-of-wedlock births, more female-headed households, better female educational outcomes, higher female labor force participation, and more gender-equal gender norms. The impacts of the war persist into the present, and are seemingly unaffected by variation in economic openness or ties to indigenous culture.