Paraguay (Paraguái, ), officially the Republic of Paraguay (República del Paraguay; Tetã Paraguái), is a country of South America. It is bordered by Argentina to the south and southwest, Brazil to the east and northeast, and Bolivia to the northwest. Although it is one of the only two landlocked countries in South America (the other is Bolivia), the country has coasts, beaches and ports on the Paraguay and Paraná rivers that give exit to the Atlantic Ocean through the Paraná-Paraguay Waterway. Due to its central location in South America, it is sometimes referred to as Corazón de Sudamérica ("Heart of South America").
Spanish conquistadores arrived in 1524 after navigating northwards from the Río de la Plata to the Paraná River, and finally up the Paraguay River. In 1537, they established the city of Asunción, which was the first capital of the Governorate of Paraguay and Río de la Plata. Paraguay was the epicenter of the Jesuit Missions, where the Guaraní people were educated and introduced to Christianity and European culture under the direction of the Society of Jesus in Jesuit reductions, mainly during the 17th century. However, after the expulsion of the Jesuits from Spanish territories in 1767, Paraguay increasingly became a peripheral colony, with few urban centers and settlers. Following independence from Spain at the beginning of the 19th century, Paraguay was ruled by a series of authoritarian governments who generally implemented nationalist, isolationist and protectionist policies. This period ended with the disastrous Paraguayan War, during which Paraguay lost at least 50% of its prewar population and around 25–33% of its territory to the Triple Alliance of Argentina, Brazil and Uruguay. In the 20th century, Paraguay faced another major international conflict – the Chaco War – against Bolivia, from which the Paraguayans emerged victorious. Afterwards, the country entered a period of military dictatorships, ending with the 35 year regime of Alfredo Stroessner that lasted until he was toppled in 1989 by an internal military coup. This marked the beginning of the "democratic era" of Paraguay.