Is it ensure, insure, or assure?
Note: One of the largest cities in Latin America, Buenos Aires is Argentina's chief port and financial, industrial, commercial, and social center.
Note: La Prensa and La Nación are two of its daily newspapers, popular throughout the Spanish-speaking world.
Republic in southern South America, bordered by Chile to the west; Bolivia and Paraguay to the north; and Brazil, Uruguay, and the Atlantic Ocean to the east. Its capital and largest city is Buenos Aires.
Note: Second-largest nation of South America, after Brazil.
Note: Juan Perón came to power in Argentina in 1946, establishing a dictatorship, and ruled with the aid of his second wife, the popular Eva Perón, until he was overthrown in 1955. He was president again from 1973 to 1974, when he died.