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geopolitics

(Encyclopedia)geopolitics, method of political analysis, popular in Central Europe during the first half of the 20th cent., that emphasized the role played by geography in international relations. Geopolitical theo...

Douglas, Donald Wills

(Encyclopedia)Douglas, Donald Wills, 1892–1981, aviation pioneer and aerospace executive, b. Brooklyn, N.Y., B.S. Massachusetts Institute of Technology, 1914. He helped design the first wind tunnel (1914–15) an...

Duisburg

(Encyclopedia)Duisburg düsˈbo͝ork [key], city, North Rhine–Westphalia, W Germany, at the confluence of...

Fischer, Bobby

(Encyclopedia)Fischer, Bobby (Robert James Fischer) fĭshˈər [key], 1943–2008, American chess player, b. Chicago. In 1958, he became a grandmaster, the youngest to that time. In the Interzonal and Candidates' m...

Bezos, Jeffrey Preston

(Encyclopedia)Bezos, Jeffrey Preston bāˈzōs [key], 1964– American business executive and on-line retailing pioneer, b. Albuquerque, N.M., grad. Princeton (B.S.E., 1986). He worked in computer technology for se...

isolationism

(Encyclopedia)isolationism, a national policy of abstaining from political, military, or economic alliances or agreements with other countries. Isolationism may be adopted in order to devote a country's energies to...

Hellenistic civilization

(Encyclopedia)Hellenistic civilization. The conquests of Alexander the Great spread Hellenism immediately over the Middle East and far into Asia. After his death in 323 b.c., the influence of Greek civilization con...

United Nations Educational, Scientific, and Cultural Organization

(Encyclopedia)United Nations Educational, Scientific, and Cultural Organization (UNESCO), specialized agency of the United Nations, with headquarters in Paris. Its counterpart in the League of Nations was the Inter...

map

(Encyclopedia)map, conventionalized representation of spatial phenomena on a plane surface. Unlike photographs, maps are selective and may be prepared to show various quantitative and qualitative facts, including b...

chess

(Encyclopedia)chess, game for two players played on a square board composed of 64 square spaces, alternately dark and light in color. London was the site of the first modern international chess tournament in 1851...