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Gran Chaco

(Encyclopedia)Gran Chaco grän chäˈkō [key] or Chaco, c.250,000 sq mi (647,500 sq km), extensive lowland plain, central South America. It is sparsely populated and is divided among Paraguay, Bolivia, and Argenti...

Negro, Río, river, Colombia, Venezuela, and Brazil

(Encyclopedia)Negro, Río rēˈō nāˈgrō [key], river, c.1,400 mi (2,250 km) long, rising as the Guainía River in E Colombia where it flows NE before turning south to form part of the Colombia-Venezuela border....

Bermejo

(Encyclopedia)Bermejo bərmāˈhō [key], river, c.650 mi (1,050 km) long, rising in N central Argentina, flowing SE along the border with Bolivia and through N Argentina to Pilar, Paraguay. Through much of its cou...

Pilcomayo

(Encyclopedia)Pilcomayo pēlkōmäˈyō [key], river c.1,000 mi (1,600 km) long, rising in the Bolivian Andes E of Lake Poopó and flowing SE in a marshy course across the Gran Chaco to the Paraguay River near Asun...

Corumbá

(Encyclopedia)Corumbá ko͝oro͞ombäˈ [key], city, Mato Grosso do Sul state, SW Brazil, on the Paraguay River. A ...

Uruguay , river, South America

(Encyclopedia)Uruguay yo͝oˈrəgwā, gwī, Span. o͞oro͞ogwiˈ, o͞oro͞owīˈ [key], river, c.1,000 mi (1,610 km) long, rising in S Brazil and flowing in an arc W, SW, and S to the Río de la Plata, an estuary; ...

Argentina

(Encyclopedia)CE5 Argentina ärjəntēˈnə, Span. ärhāntēˈnä [key], officially Argentine Republic, republic (2020 est. pop. 45,380,000), 1,072,157 sq mi (2,776,889 sq k...

López, Francisco Solano

(Encyclopedia)López, Francisco Solano lōˈpās [key], 1826?–1870, president of Paraguay (1862–70). He was the son of Carlos Antonio López, who made him a brigadier general at 18. Appointed head of a diploma...

Artigas, José Gervasio

(Encyclopedia)Artigas, José Gervasio hōsāˈ hārväˈsyō ärtēˈgäs [key], 1764–1850, national hero of Uruguay, first leader in the movement toward independence. He came from the cattle-raising region Banda...

South America

(Encyclopedia)CE5 South America, fourth largest continent (2015 est. pop. 416,436,000), c.6,880,000 sq mi (17,819,000 sq km), the southern of the two continents of the Western Hemisphere. It is divided political...