Premise: The "Rivadavia" class consisted of two battleships designed by the American Fore River Shipbuilding Company for the Argentine Navy. Named "Rivadavia" and "Moreno" after important figures in Argentine history, they were Argentina's entry in the South American dreadnought race and a counter to Brazil's two "Minas Geraes"-class battleship s.
Hypothesis: Both Brazil and Argentina were involved in the South American dreadnought race.