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polygon

(Encyclopedia)polygon, closed plane figure bounded by straight line segments as sides. A polygon is convex if any two points inside the polygon can be connected by a line segment that does not intersect any side. I...

Cash, Johnny

(Encyclopedia)Cash, Johnny, 1932–2003, American singer and songwriter, b. Kingsland, Ark. Born to a farm family, he went to Memphis in 1955 and recorded such hits as “I Walk the Line” (1956) and “Ring of Fi...

book clubs

(Encyclopedia)book clubs. As a phenomenon in American cultural life, book clubs have made an impact in two periods of history. During the 18th and 19th cent. book clubs were formed for the purposes of discussion an...

Berg

(Encyclopedia)Berg bĕrk [key], former duchy, W Germany, along the right bank of the Rhine River between the Ruhr and Sieg rivers. Düsseldorf was its chief city. A county in the 12th cent., Berg passed (1348) to t...

Drake, Francis Marion

(Encyclopedia)Drake, Francis Marion, 1830–1903, Union army officer in the Civil War, railroad president, and governor of Iowa (1896–98), b. Rushville, Ill. He helped defend St. Joseph, Mo., against Confederate ...

Dongan, Thomas

(Encyclopedia)Dongan, Thomas dŏngˈgən [key], 1634–1715, colonial governor of New York, b. Co. Kildare, Ireland. He was appointed governor in 1682, and on the instructions of the duke of York (later James II), ...

Duclos, Jacques

(Encyclopedia)Duclos, Jacques zhäk düklōˈ [key], 1896–1975, French Communist party leader. Early in his career he joined the French Communist party and in 1931 became party secretary and a member of the polit...

Couve de Murville, Maurice

(Encyclopedia)Couve de Murville, Maurice mōrēsˈ ko͞ov də mürvēlˈ [key], 1907–99, French politician and diplomat. After World War II he served as ambassador to Egypt, the United States, and West Germany. A...

Davis, Gray

(Encyclopedia)Davis, Gray (Joseph Graham Davis, Jr.), 1942–, U.S. politician, b. the Bronx, N.Y. A graduate of Stanford Univ. (1964) and Columbia Univ. Law School (1967), he entered the army and served in Vietnam...

Clarence, Lionel, duke of

(Encyclopedia)Clarence, Lionel, duke of, 1338–68, third son of Edward III of England. His marriage (1352) to Elizabeth de Burgh gained him the title and lands of the earl of Ulster. Governor of Ireland from 1361 ...