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Colombia

(Encyclopedia)CE5 Colombia kəlŭmˈbēə, Span. kōlōmˈbyä [key], officially Republic of Col...

Dnieper

(Encyclopedia)Dnieper nēˈpər [key], Belarusian Dnyapro, Rus. Dnepr, Ukr. Dnipro, river, c.1,430 mi (2,300 km) long, in Russia, Belarus, and Ukraine. One of the longest rivers in Europe, it rises in the Valdai Hi...

Don, river, Russia

(Encyclopedia)Don dŏn, Rus. dôn [key], river, SW European Russia. It rises SE of Tula and flows c.1,200 mi (1,930 km), first SE past Voronezh, then SW into the Sea of Azov. At its eastern bend the Don is linked b...

corvée

(Encyclopedia)corvée kôrvāˈ [key], under the feudal system, compulsory, unpaid labor demanded by a lord or king and the system of such labor in general. There were national and local variations, but in broad te...

Fort Lauderdale

(Encyclopedia)Fort Lauderdale lôˈdərdāl [key], residential, commercial, and resort city (2020 pop. 182,760), seat ...

Fulton, Robert

(Encyclopedia)Fulton, Robert, 1765–1815, American inventor, engineer, and painter, b. near Lancaster, Pa. He was a man remarkable for his many talents and his mechanical genius. An expert gunsmith at the time of ...

Nicaragua, Lake

(Encyclopedia)Nicaragua, Lake, 3,089 sq mi (8,001 sq km), c.100 mi (160 km) long and up to 45 mi (72 km) wide, SW Nicaragua; the largest lake of Central America. It is drained into the Caribbean Sea by the San Juan...

Keokuk, city, United States

(Encyclopedia)Keokuk, city (1990 pop. 12,451), seat of Lee co., extreme SE Iowa, on the Mississippi River at the foot of the Des Moines River rapids and in a farm area; inc. 1847. Its industries focus on food proce...

Maris

(Encyclopedia)Maris mäˈrĭs [key], three Dutch painters, who were brothers. Jacob or Jakob Maris, 1837–99, the most celebrated, painted domestic interiors but is particularly famous for his vigorous landscapes ...

mesoderm

(Encyclopedia)mesoderm, in biology, middle layer of tissue formed in the gastrula stage of the developing embryo. At the end of the blastula stage, cells of the embryo are arranged in the form of a hollow ball. Con...