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Peloponnesian War

(Encyclopedia)Peloponnesian War pĕlˈəpənēˈzhən [key], 431–404 b.c., decisive struggle in ancient Greece between Athens and Sparta. It ruined Athens, at least for a time. The rivalry between Athens' maritim...

progressive education

(Encyclopedia)progressive education, movement in American education. Confined to a period between the late 19th and mid-20th cent., the term “progressive education” is generally used to refer only to those educ...

industrial management

(Encyclopedia)industrial management, term applied to highly organized modern methods of carrying on industrial, especially manufacturing, operations. Modern technological devices, particularly in the areas of com...

common law

(Encyclopedia)common law, system of law that prevails in England and in countries colonized by England. The name is derived from the medieval theory that the law administered by the king's courts represented the co...

North West Company

(Encyclopedia)North West Company, fur-trading organization in North America in the late 18th and early 19th cent.; it was composed of Montreal trading firms and fur traders. After 1810 the rivalry between the Nor...

Volga

(Encyclopedia)Volga vŏlˈgə, Rus. vôlˈgə [key], river, c.2,300 mi (3,700 km) long, central and E European Russia. It is the longest river of Europe and the principal waterway of Russia, being navigable (with l...

skiing

(Encyclopedia)skiing, sport of sliding over snow on skis—long, narrow, flexible runners. Water skiing is a warm-weather sport in which a motor-propelled craft tows a skier through the water. Although its orig...

Iceland

(Encyclopedia)CE5 Iceland, Icel. Ísland, officially Republic of Iceland, republic (2015 est. pop. 330,000), 39,698 sq mi (102,819 sq km), the westernmost state of Europe, occupying an island in the Atlantic Oce...

immigration

(Encyclopedia)immigration, entrance of a person (an alien) into a new country for the purpose of establishing permanent residence. Motives for immigration, like those for migration generally, are often economic, al...

Congo, river, Africa

(Encyclopedia)Congo zīˈēr, zäērˈ [key], great river of equatorial Africa, c.2,720 mi (4,380 km) long, formed by the waters of the Lualaba River and its tributary, the Luvua River, and flowing generally N and ...