Argentina , officially the Argentine Republic (Spanish: República Argentina), is a country in the southern half of South America. Argentina covers an area of 2,780,400 km (1,073,500 sq mi), making it the second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the eighth-largest country in the world. It shares the bulk of the Southern Cone with Chile to the west, and is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast,