centralization system of drinking water supply
11pre-Columbian civilizations — Introduction the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th …
12Argentina — /ahr jeuhn tee neuh/; Sp. /ahrdd hen tee nah/, n. a republic in S South America. 35,797,536; 1,084,120 sq. mi. (2,807,870 sq. km). Cap.: Buenos Aires. Also called the Argentine. Official name, Argentine Republic. * * * Argentina Introduction… …
13Russia — /rush euh/, n. 1. Also called Russian Empire. Russian, Rossiya. a former empire in E Europe and N and W Asia: overthrown by the Russian Revolution 1917. Cap.: St. Petersburg (1703 1917). 2. See Union of Soviet Socialist Republics. 3. See Russian… …
14Colombia — Colombian, adj., n. /keuh lum bee euh/; Sp. /kaw lawm byah/, n. a republic in NW South America. 37,418,290; 439,828 sq. mi. (1,139,155 sq. km). Cap.: Bogotá. * * * Colombia Introduction Colombia Background: Colombia was one of the three countries …
15Sonora — For other uses, see Sonora (disambiguation). Sonora Estado Libre y Soberano de Sonora   State   …
16Cambodia — /kam boh dee euh/, n. a republic in SE Asia: formerly part of French Indochina. 11,163,861; 69,866 sq. mi. (180,953 sq. km). Cap.: Phnom Penh. Formerly, People s Republic of Kampuchea, Khmer Republic. * * * Cambodia Introduction Cambodia… …
17Economy of Iran — The economy of Iran is a transition economy where a continuing strong labour force growth unmatched by commensurate real economic growth is driving up unemployment to a level considerably higher than the official estimate of 11%. [… …
18National City, Illinois — is a suburb of East St. Louis, Illinois. Incorporated in 1907, it was a company town for the St. Louis National Stockyards Company.[1]National City was annexed by nearby Fairmont City, Illinois not East St. Louis. Contents 1 History 1.1… …
19Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
20education — /ej oo kay sheuhn/, n. 1. the act or process of imparting or acquiring general knowledge, developing the powers of reasoning and judgment, and generally of preparing oneself or others intellectually for mature life. 2. the act or process of… …
