Bolivia in the context of Potatoes of Chiloé

Peru, officially the Republic of Peru, is a country in western South America. It is bordered to the north by Ecuador and Colombia, to the east by Brazil, to the southeast by Bolivia, to the south by Chile, and to the south and west by the Pacific Ocean. Peru is a megadiverse country, with habitats ranging from the arid plains of the Pacific coastal region in the west, to the peaks of the Andes mountains extending from the north to the southeast of the country, to the tropical Amazon basin rainforest in the east with the Amazon River. Peru has a population of over 32 million, and its capital and largest city is Lima. At 1,285,216 km (496,225 sq mi), Peru is the 19th largest country in the world, and the third largest in South America.

Peruvian territory was home to several cultures during the ancient and medieval periods, and has one of the longest histories of civilization of any country, tracing its heritage back to the 10th millennium BCE Caral–Supe civilization, the earliest civilization in the Americas and considered one of the cradles of civilization. Notable succeeding cultures and civilizations include the Nazca culture, the Moche, Wari and Tiwanaku empires, the Kingdom of Cusco, and the Inca Empire, the largest known state in the pre-Columbian Americas. The Spanish Empire conquered the region in the 16th century and Charles V established a viceroyalty with the official name of the Kingdom of Peru that encompassed most of its South American territories, with its capital in Lima. Higher education started in the Americas with the official establishment of the National University of San Marcos in Lima in 1551.

An Indigenous language, or autochthonous language, is a language that is native to a region and spoken by its Indigenous peoples. Indigenous languages are not necessarily national languages but they can be; for example, Aymara is both an Indigenous language and an official language of Bolivia. Also, national languages are not necessarily Indigenous to the country.

Many Indigenous peoples worldwide have stopped the generational passage of their ancestral languages and have instead adopted the majority language as part of their acculturation into their host culture. Furthermore, many Indigenous languages have been subject to linguicide (language killing). Recognizing their vulnerability, the United Nations proclaimed 2019 the International Year of Indigenous Languages "to draw attention to the critical loss of Indigenous languages and the urgent need to preserve, revitalize and promote Indigenous languages."

The Indigenous peoples of the Americas are the peoples who are native to the Americas or the Western Hemisphere. Their ancestors are among the pre-Columbian population of South or North America, including Central America and the Caribbean. Indigenous peoples live throughout the Americas. While often minorities in their countries, Indigenous peoples are the majority in Greenland and close to a majority in Bolivia and Guatemala.

There are at least 1,000 different Indigenous languages of the Americas. Some languages, including Quechua, Arawak, Aymara, Guaraní, Nahuatl, and some Mayan languages, have millions of speakers and are recognized as official by governments in Bolivia, Peru, Paraguay, and Greenland.

Chile, officially the Republic of Chile, is a country in western South America. It is the southernmost country in the world and the closest to Antarctica, extending along a narrow strip of land between the Andes Mountains and the Pacific Ocean. According to the 2024 census, Chile had an enumerated population of 18.5 million. The country covers a territorial area of 756,102 square kilometers (291,933 sq mi), sharing borders with Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage to the south. It also administers several Pacific islands, including Juan Fernández, Isla Salas y Gómez, Desventuradas, and Easter Island, and claims about 1,250,000 square kilometers (480,000 sq mi) of Antarctica as the Chilean Antarctic Territory. The capital and largest city is Santiago, and the national language is Spanish.

Spain conquered and colonized the region in the mid-16th century, replacing Inca rule; however, they failed to conquer the autonomous tribal Mapuche people who inhabited what is now south-central Chile. Chile emerged as a relatively stable authoritarian republic in the 1830s after their 1818 declaration of independence from Spain. During the 19th century, Chile experienced significant economic and territorial growth, putting an end to Mapuche resistance in the 1880s and gaining its current northern territory in the War of the Pacific (1879–83) by defeating Peru and Bolivia.

The Andes (/ˈændiːz/ AN-deez), Andes Mountains or Andean Mountain Range (Spanish: Cordillera de los Andes; Quechua: Anti) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is 8,900 km (5,500 mi) long and 200 to 700 km (120 to 430 mi) wide (widest between 18°S and 20°S latitude) and has an average height of about 4,000 m (13,000 ft). The Andes extend from south to north through seven South American countries: Argentina, Chile, Bolivia, Peru, Ecuador, Colombia, and Venezuela.

Along their length, the Andes are split into several ranges, separated by intermediate depressions. The Andes are the location of several high plateaus—some of which host major cities such as Arequipa, Bogotá, Cali, Medellín, El Alto, La Paz, Mérida, Santiago and Sucre. The Altiplano Plateau is the world's second highest after the Tibetan Plateau. These ranges are in turn grouped into three major divisions based on climate: the Tropical Andes, the Dry Andes, and the Wet Andes.

The Amazon basin is the part of South America drained by the Amazon River and its tributaries. The Amazon drainage basin covers an area of about 7,000,000 km (2,700,000 sq mi), or about 35.5 percent of the South American continent. It is located in the countries of Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname, and Venezuela, as well as the territory of French Guiana.

Most of the basin is covered by the Amazon rainforest, also known as Amazonia. With a 6 million km (2.3 million sq mi) area of dense tropical forest, it is the largest rainforest in the world.

The Inca Empire, officially known as the Realm of the Four Parts (Quechua: Tawantinsuyu pronounced [taˈwantiŋ ˈsuju], lit. 'land of four parts'), was the largest empire in pre-Columbian America. The administrative, political, and military center of the empire was in the city of Cusco. The Inca civilisation rose from the Peruvian highlands sometime in the early 13th century. The Portuguese explorer Aleixo Garcia was the first European to reach the Inca Empire in 1524. Later, in 1532, the Spanish began the conquest of the Inca Empire, and by 1572 the last Inca state was fully conquered.

From 1438 to 1533, the Incas incorporated a large portion of western South America, centered on the Andean Mountains, using conquest and peaceful assimilation, among other methods. At its largest, the empire joined modern-day Peru with what are now western Ecuador, western and south-central Bolivia, northwest Argentina, the southwesternmost tip of Colombia and a large portion of modern-day Chile, forming a state comparable to the historical empires of Eurasia. Its official language was Quechua.

The Río de la Plata basin (Spanish: Cuenca del Plata, Portuguese: Bacia do Prata), more often called the River Plate basin in scholarly writings, sometimes called the Platine basin or Platine region, is the 3,170,000-square-kilometre (1,220,000 sq mi) hydrographical area in South America that drains to the Río de la Plata. It includes areas of southeastern Bolivia, southern and central Brazil, the entire country of Paraguay, most of Uruguay, and northern Argentina. Making up about one fourth of the continent's surface, it is the second largest drainage basin in South America (after the Amazon basin) and one of the largest in the world.

The main rivers of the La Plata basin are the Paraná River, the Paraguay River (the Paraná's main tributary), and the Uruguay River.

The Southern Common Market (commonly known by abbreviation Mercosur in Spanish and Mercosul in Portuguese) is a South American trade bloc established by the Treaty of Asunción in 1991 and Protocol of Ouro Preto in 1994. Its full members are Argentina, Bolivia, Brazil, Paraguay, and Uruguay. Venezuela is a full member but has been suspended since 1 December 2016. Chile, Colombia, Ecuador, Guyana, Panama, Peru, and Suriname are associate countries.

Mercosur's origins are linked to the discussions for the constitution of a regional economic market for Latin America, which go back to the treaty that established the Latin American Free Trade Association in 1960, which was succeeded by the Latin American Integration Association in the 1980s. At the time, Argentina and Brazil made progress in the matter, signing the Iguaçu Declaration (1985), which established a bilateral commission, which was followed by a series of trade agreements the following year. The Integration, Cooperation and Development Treaty, signed between both countries in 1988, set the goal of establishing a common market, which other Latin American countries could join. Paraguay and Uruguay joined the process and the four countries became signatories to the Treaty of Asunción (1991), which established the Southern Common Market, a trade alliance aimed at boosting the regional economy, moving goods, people among themselves, workforce and capital. Initially a free trade zone was established, in which the signatory countries would not tax or restrict each other's imports. As of 1 January 1995, this area became a customs union, in which all signatories could charge the same quotas on imports from other countries (common external tariff). The following year, Bolivia and Chile acquired membership status. Other Latin American nations have expressed interest in joining the group.

The Andean Community (Spanish: Comunidad Andina de Naciones, CAN) is an international organization in South America. It consists of the member states Bolivia, Colombia, Ecuador and Peru and aims at the economic, political and social integration of these states.

CAN is also a free trade area with the objective of creating a customs union comprising the South American countries. The organization was called the Andean Pact (Pacto Andino) until 1996 and came into existence when the Cartagena Agreement was signed in 1969. Since the reform by the Trujillo Protocol of 1997 it called Comunidad Andina de Naciones. Its headquarters are in Lima, Peru.

Reed boats and rafts, along with dugout canoes and other rafts, are among the oldest known types of boats. Often used as traditional fishing boats, they are still used in a few places around the world, though they have generally been replaced with planked boats. Reed boats can be distinguished from reed rafts, since reed boats are usually waterproofed with some form of tar. As well as boats and rafts, small floating islands have also been constructed from reeds.

The earliest discovered remains from a reed boat are 7000 years old, found in Kuwait. Reed boats are depicted in early petroglyphs and were common in ancient Egypt. A well-known example from the Book of Exodus is the ark of bulrushes in which the baby Moses was set afloat. They were also constructed from early times in Peru and Bolivia, and boats with remarkably similar design have been found in Easter Island and also New Zealand where they were made by indigenous Māori. Reed boats are still used in Peru, Bolivia, Ethiopia, and until recently in Corfu. The explorations and investigations of the Norwegian ethnographer and adventurer Thor Heyerdahl have resulted in a better understanding of the construction and capabilities of reed boats.

Aymara (Aymara pronunciation: [ajˈmaɾa] ; also Aymar aru) is an Aymaran language spoken by the Aymara people of the Bolivian Andes. It is one of only a handful of Native American languages with over one million speakers. Aymara, along with Spanish and Quechua, is an official language in Bolivia and Peru. It is also spoken, to a much lesser extent, by some communities in northern Chile and northern Argentina, where it is a recognized minority language.

Academic sources confirm that Aymara is spoken in Argentina, particularly in the provinces of Jujuy and Salta. Aymara is recognized as one of the indigenous language families within the country, often grouped alongside others such as Quechua, Mapuche, and Guaraní. The University of Arizona identifies the Kolla people, who speak Aymara, as having a significant presence in these provinces.

Natural salt pans or salt flats are flat expanses of ground covered with salt and other minerals, usually shining white under the sun. They are found in deserts and are natural formations (unlike salt evaporation ponds, which are artificial).

A salt pan forms by evaporation of a water pool, such as a lake or pond. This happens in climates where the rate of water evaporation exceeds the rate of precipitation — that is, in a desert. If the water cannot drain into the ground, it remains on the surface until it evaporates, leaving behind minerals precipitated from the salt ions dissolved in the water. Over thousands of years, the minerals (usually salts) accumulate on the surface. These minerals reflect the sun's rays and often appear as white areas.

Antofagasta (Spanish pronunciation: [antofaˈɣasta] ) is a port city in northern Chile, about 1,100 kilometres (700 mi) north of Santiago. It is the capital of Antofagasta Province and Antofagasta Region. According to the 2015 census, the city has a population of 402,669.

Once claimed by Bolivia following the Spanish American wars of independence, Antofagasta was captured by Chile on 14 February 1879, triggering the War of the Pacific (1879–83). Chilean sovereignty was officially recognised by Bolivia under the terms of the 1904 Treaty of Peace and Friendship.

The Indigenous peoples in Bolivia or Native Bolivians (Spanish: Bolivianos Nativos) are Bolivians who have predominantly or total Amerindian ancestry. They constitute anywhere from 38.7% to 62.05% of Bolivia's population, depending on different estimates, and they belong to 36 recognized ethnic groups. Aymara and Quechua are the largest groups. The geography of Bolivia includes the Andes, the Gran Chaco, the Yungas, the Chiquitania and the Amazon rainforest.

An additional 30–68% of the population is mestizo, having mixed European and Indigenous ancestry.

Paraguayan Guarani, or simply Guarani (avañe'ẽ), is a language of South America that belongs to the Tupi–Guarani branch of the Tupian language family. It is one of the two official languages of Paraguay (along with Spanish), where it is spoken by the majority of the population, and where half of the rural population are monolingual speakers of the language.

Variants of the language are spoken by communities in neighboring countries including parts of northeastern Argentina, southeastern Bolivia and southwestern Brazil. It is a second official language of the Argentine province of Corrientes since 2004 and the Brazilian city of Tacuru since 2010. Guarani is also one of the three official languages of Mercosur, alongside Spanish and Portuguese.

Paraguay (Guarani: Paraguái), officially the Republic of Paraguay, is a landlocked country located in the central region of South America. It borders Bolivia to the northwest and north, Brazil to the northeast and east, and Argentina to the southeast, south, and west. Paraguay has access to the Atlantic Ocean via the Paraná–Paraguay Waterway. The country is governed as a unitary presidential republic composed of a capital district and seventeen departments. Its capital and largest city is Asunción.

The indigenous Guaraní had been living in eastern Paraguay for at least a millennium before the arrival of Spanish conquistadores in 1524. The city of Asunción was founded in 1537 as the first capital of the Governorate of the Río de la Plata within the Spanish Empire. During the 17th century, Paraguay was the center of Jesuit missions, where the natives were converted to Christianity and introduced to European culture. After the expulsion of the Jesuits from Spanish territories in 1767, Paraguay increasingly became a peripheral colony. Following independence from Spain in the early 19th century, Paraguay was ruled by a series of authoritarian governments. This period ended with the disastrous Paraguayan War (1864–1870), during which the country lost half its prewar population and around 25–33% of its territory. In the 20th century, Paraguay faced another major international conflict—the Chaco War (1932–1935) against Bolivia—in which Paraguay prevailed. It subsequently came under a succession of military dictators, culminating in the 35-year regime of Alfredo Stroessner, which lasted until his overthrow in 1989 by an internal military coup. This marked the beginning of Paraguay's current democratic era.

Quito (Spanish pronunciation: [ˈkito] ; Quechua: Kitu), officially San Francisco de Quito, is the capital and second-largest city of Ecuador, with an estimated population of 2.8 million in its metropolitan area. It is also the capital of the province of Pichincha. Quito is in a valley on the eastern slopes of Pichincha, an active stratovolcano in the Andes.

Quito's elevation of 2,850 m (9,350 ft) makes it either the highest or the second highest national capital city in the world. This varied standing is because Bolivia is a country with multiple capitals; if La Paz is considered the Bolivian national capital, it tops the list of highest capitals, but if Sucre is specified as the capital, then it is the second highest, behind Quito.