Argentina–Brazil relations - Wikipedia
https://en.wikipedia.org/wiki/Argentina–Brazil_relationsArgentina and Brazil share the Río de la Plata basin– an area where Portuguese and Spanish conquistadors collided in their ambition to conquer new land for their respective crowns. After achieving independence from the Iberian crowns in the early nineteenth century, the Argentine Republic and the Brazilian Empireinherited a series of unresolved territorial disputes from their colonial powers, i…