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Gifford, Sanford Robinson

(Encyclopedia)Gifford, Sanford Robinson, 1823–80, American painter, b. Greenfield, N.Y. A major painter of the American movement known as luminism, Gifford, who was influenced by Thomas Cole early in his career, ...

floodplain

(Encyclopedia)floodplain, level land along the course of a river formed by the deposition of sediment during periodic floods. Floodplains contain such features as levees, backswamps, delta plains, and oxbow lakes. ...

United States, Great Seal of the

(Encyclopedia)United States, Great Seal of the, official impression that validates a United States government document. It was adopted by the Continental Congress in 1782 and, with only minor changes in the design,...

North America

(Encyclopedia) CE5 North America, third largest continent (2015 est. pop. 571,949,000), c.9,400,000 sq mi (24,346,000 sq km), the northern of the two continents of the Western Hemisphere. North America includes a...

United Nations

(Encyclopedia) CE5 CE5 United Nations (UN), international organization established immediately after World War II. It replaced the League of Nations. In 1945, when the UN was founded, there were 51 members; 193...
 

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