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Europe

(Encyclopedia)CE5 Europe yo͝orˈəp [key], 6th largest continent, c.4,000,000 sq mi (10,360,000 sq km) including adjacent islands (2015 est. pop. 740,814,000). It is actually a vast peninsula of the great Euras...

desert

(Encyclopedia)desert, arid region, usually partly covered by sand, having scanty vegetation or sometimes almost none, and capable of supporting only a limited and specially adapted animal population. The so-called ...

Mennonites

(Encyclopedia)Mennonites mĕnˈnənīts [key], descendants of the Dutch and Swiss evangelical Anabaptists of the 16th cent. The name Mennonite is derived from Menno Simons (c.1496–1561), Dutch reformer and org...

hydrogen bomb

(Encyclopedia)hydrogen bomb or H-bomb, weapon deriving a large portion of its energy from the nuclear fusion of hydrogen isotopes. In an atomic bomb, uranium or plutonium is split into lighter elements that togethe...

Northern War

(Encyclopedia)Northern War, 1700–1721, general European conflict, fought in N and E Europe at the same time that the War of the Spanish Succession was fought in the west and the south. It arose chiefly from the d...

Poland

(Encyclopedia)CE5 Poland, Pol. Polska, officially Republic of Poland, republic (2015 est. pop. 38,265,000), 120,725 sq mi (312,677 sq km), central Europe. It borders on Germany in the west, on the Baltic Sea and...

German language

(Encyclopedia)German language, member of the West Germanic group of the Germanic subfamily of the Indo-European family of languages (see Germanic languages). It is the official language of Germany and Austria and i...

election

(Encyclopedia)election, choosing a candidate for office in an organization by the vote of those enfranchised to cast a ballot. In the United States, Canada, Mexico, Great Britain, and many other nations, usuall...

mass extinction

(Encyclopedia)mass extinction, the extinction of a large percentage of the earth's species, opening ecological niches for other species to fill. There have been at least ten such events. The five greatest were thos...

Trotsky, Leon

(Encyclopedia)Trotsky, Leon trŏtˈskē, Rus. lāˈən trôtˈskē [key], 1879–1940, Russian Communist revolutionary, one of the principal leaders in the establishment of the USSR; his original name was Lev David...