which two countries are on the western border of bolivia
Bolivia It is constitutionally a unitary state, divided into nine departments. Its geography varies from the peaks of the Andes in the West, to the Eastern Lowlands, situated within the Amazon Basin. It is bordered to the north and east by Brazil, to the southeast by Paraguay, to the south by Argentina, to the southwest by Chile, and to the northwest by Peru. One-third of the country is within the Andean mountain range. With 1,098,581 km2 (424,164 sq mi) of area, Bolivia is the 5th largest country in South America and the 27th largest in the world.
Venezuela Venezuela (/ˌvɛnəˈzweɪlə/ ( listen) VEN-ə-ZWAYL-ə; American Spanish: [beneˈswela]), officially the Bolivarian Republic of Venezuela (Spanish: República Bolivariana de Venezuela)[7][n 1], is a federal republic on the northern coast of South America, bordered by Colombia on the west, Brazil on the south, Guyana on the east, the Dutch Lesser Antilles to the north and Trinidad and Tobago to the north-east. Venezuela covers 916,445 km2 (353,841 sq mi) and has over 31 million (31,568,179) people.[3] The country has extremely high biodiversity and is ranked 7th in the world's list of nations with the most number of species.[8] There are habitats ranging from the Andes Mountains in the west to the Amazon Basin rain-forest in the south via extensive llanos plains, the Caribbean coast and the Orinoco River Delta in the east.