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Río Cuarto

(Encyclopedia)Río Cuarto rēˈō kwärˈtō [key], city (1991 pop. 138,996), Córdoba prov., central Argentina, in the W Pampa, on the Río Cuarto. It is the commercial center for a large agricultural area yieldin...

Río Muni

(Encyclopedia)Río Muni: see Equatorial Guinea. ...

Río Piedras

(Encyclopedia)Río Piedras pyāˈᵺräs [key], suburb of San Juan, Puerto Rico, with which it was merged in 1951. It is an industrial and agricultural trading center. The main campus of the Univ. of Puerto Rico is...

Río Tinto

(Encyclopedia)Río Tinto, Ríotinto mēˈnäs dā [key], town (1990 pop. 5,934), Huelva prov., SW Spain, in the Sierra Morena Mts., in Andalusia. It is the center of the Río Tinto mining region, named for the riv...

Rio Treaty

(Encyclopedia)Rio Treaty (Inter-American Treaty of Reciprocal Assistance), signed Sept. 2, 1947, and originally ratified by all 21 American republics. Under the treaty, an armed attack or threat of aggression again...

Guerrero

(Encyclopedia)Guerrero, state, 24,887 sq mi (64,457 sq km), S Mexico, on the Pacific Ocean. The capital is Chilpancingo. Dominated by the Sierra Madre del Sur, which ...

Resaca de la Palma

(Encyclopedia)Resaca de la Palma rāsäˈkä ᵺā lä pälˈmä [key], valley, an abandoned bed of the Rio Grande, N of Brownsville, Tex., where the second battle of the Mexican War was fought, May 9, 1846. Mexica...

San Juan, pueblo, United States

(Encyclopedia)San Juan, pueblo (1990 pop. 1,821), Rio Arriba co., N N.Mex., on the Rio Grande; settled 1598 by Juan de Oñate. A Franciscan mission was later established. It was the home of Popé, the medicine man ...

Mexico, country, North America

(Encyclopedia)CE5 Mexico both: māˈhēkō [key], officially United Mexican States, republic (2015 est. pop. 125,891,000), 753,665 sq mi (1,952,500 sq km), S North America. It borders on the United States in the...

Santa Maria, city, Brazil

(Encyclopedia)Santa Maria sänˈtə mərēˈə [key], city (1991 pop. 217,592), Rio Grande do Sul state, S Brazil. It is a major railroad terminus and the site of an important military base. Foodstuffs and rail mac...