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Ibn Khaldun

(Encyclopedia)Ibn Khaldun ĭˈbən khäldo͞onˈ [key], 1332–1406, Arab historian, b. Tunis. He held various offices under the rulers of Tunis and Morocco and served (1363) as ambassador of the Moorish king of Gr...

Wittkower, Rudolf

(Encyclopedia)Wittkower, Rudolf wĭtˈkōv-ər, Ger. vĭtˈkōv-ər [key], 1901–71, German-American art historian. After gaining his doctorate in Berlin, Wittkower became a research assistant and later research f...

corn

(Encyclopedia)corn, in botany. The name corn is given to the leading cereal crop of any major region. In England corn means wheat; in Scotland and Ireland, oats. The grain called corn in the United States is Indian...

Emigrant Aid Company

(Encyclopedia)Emigrant Aid Company, organization formed in 1854 to promote organized antislavery immigration to the Kansas territory from the Northeast. Eli Thayer conceived the plan as early as Feb., 1854, even be...

Oligocene epoch

(Encyclopedia)Oligocene epoch ŏlˈəgōsēnˌ [key], third epoch of the Tertiary period in the Cenozoic era of geologic time, lasting from 38 to 24 million years ago. More of North America was dry land during the ...

Sumner, Charles

(Encyclopedia)Sumner, Charles, 1811–74, U.S. senator from Massachusetts (1851–74), b. Boston. He attended (1831–33) and was later a lecturer at Harvard law school, was admitted (1834) to the bar, and practice...

frontier

(Encyclopedia)frontier, in U.S. history, the border area of settlement of Europeans and their descendants; it was vital in the conquest of the land between the Atlantic and the Pacific. The importance of the westwa...

Duris of Samos

(Encyclopedia)Duris of Samos do͞oˈrĭs [key], fl. 3d cent. b.c., Greek historian. A descendent of Alcibiades, Duris was tyrant of Samos for a time. He wrote Samian Chronicle—a history of Samos—and a rambling ...

Commons, John Rogers

(Encyclopedia)Commons, John Rogers, 1862–1945, American economist, b. Hollansburg, Ohio, grad. Oberlin, 1888. Influenced by the other social sciences, Commons tried to broaden the scope of economics, especially i...

Haverfield, Francis John

(Encyclopedia)Haverfield, Francis John hăvˈərfēld [key], 1860–1919, English historian and archaeologist. Educated at Oxford, he also worked under Theodor Mommsen. In 1907 he became Camden professor of ancient...