Three countries can be said to border Brazil and Argentina, they are Bolivia, Paraguay and Uruguay.
Paraguay borders only Brazil and Argentina.
Bolivia.
The country that borders Brazil, Bolivia, and Argentina is Paraguay.
Paraguay
Chile, Paraguay, Brazil, Uruguay and The Falkland Islands.
Paraguay is located on the continent of South America. Argentina borders it to the south and southwest. Brazil borders it to the east and northeast. Bolivia borders Paraguay to the northwest. Because of its central location, it sometimes is referred to as 'Corazon de America' ['Heart of America'].
Argentina has borders with five countries. In the west there is a long border with Chile. In the north there are borders with Bolivia and Paraguay. To thdgfdfdfe northeast is Brazil. Between Argentina and Brazil on the Atlantic coast there is Uruguay.
Paraguay is bordered by Brazil to the east and Bolivia to the north. Argentina also borders Paraguay to the west.
The countries that border Bolivia are Peru, Brazil, Paraguay, Argentina and Chile. It is a landlocked country.
Paraguay
South Africa does not have a common border with Bolivia