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Niagara Falls, waterfall, United States and Canada

(Encyclopedia)Niagara Falls, in the Niagara River, W N.Y. and S Ont., Canada; one of the most famous spectacles in North America. The falls are on the international line between the cities of Niagara Falls, N.Y., a...

Negro, Río, river, Colombia, Venezuela, and Brazil

(Encyclopedia)Negro, Río rēˈō nāˈgrō [key], river, c.1,400 mi (2,250 km) long, rising as the Guainía River in E Colombia where it flows NE before turning south to form part of the Colombia-Venezuela border....

Organization for Security and Cooperation in Europe

(Encyclopedia)Organization for Security and Cooperation in Europe (OSCE), international organization established as the Conference on Security and Cooperation in Europe (CSCE) in 1973, during the cold war, to promo...

Kootenai, river, Canada and the United States

(Encyclopedia)Kootenai ko͞oˈtĭnā [key], river, 407 mi (655 km) long, rising in the Rocky Mts., SE British Columbia, Canada. It flows S into NW Montana, NW through N Idaho, then N into Canada. There it flows thr...

Keokuk, chief of the Sac and Fox

(Encyclopedia)Keokuk kēˈəkək [key], c.1780–1848, Native American, chief of the Sac and Fox, b. near present-day Rock Island, Ill. When Black Hawk supported the British in the War of 1812, Keokuk refused to jo...

Louis II, king of Hungary and Bohemia

(Encyclopedia)Louis II, 1506–26, king of Hungary and Bohemia (1516–26), son and successor of Uladislaus II. He was the last of the Jagiello dynasty in the two kingdoms. In the face of intensified attacks by Sul...

langue d'oc and langue d'oïl

(Encyclopedia)langue d'oc dôēlˈ [key], names of the two principal groups of medieval French dialects. Langue d'oc (literally, “language of yes”) was spoken south of a line running, roughly, from Bordeaux to ...

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