Mezue ahịrịokwu na-esonụ: Rosas chere ọtụtụ ihe iyi egwu nye ike ya n'oge ngwụsị afọ ndị 1830 na mmalite afọ ndị 1840. Ọ bụ
lụrụ agha megide Peru na Bolivia Confederation, tachiri obi na mgbochi nke France, chere nnupụisi ihu na mpaghara nke ya ma lụọ nnukwu nnupụisi nke were ọtụtụ afọ wee gbasaa n'ọtụtụ mpaghara Argentine. Rosas nọgidere ma gbasaa mmetụta ya n'ógbè dị iche iche, na-achịkwa ha n'ụzọ dị irè site n'ụzọ kpọmkwem na n'ụzọ na-apụtachaghị ìhè. Ka ọ na-erule afọ 1848, o nweela ike karịrị nke Buenos Aires, ọ bụkwa ya na-achị Argentina dum. Rosas gbalịrị ijikọta mba ndị agbata obi nke Uruguay na Paraguay. France na Great Britain jikọtara ọnụ ịbọ ọbọ megide mgbasawanye Argentine, na-egbochi Buenos Aires maka ọtụtụ n'ime ngwụsị afọ 1840, mana ha enweghị ike ịkwụsị Rosas, onye aha ya dị elu site na usoro ihe ịga nke ọma ya.