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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...

tank, military

(Encyclopedia)tank, military, armored vehicle having caterpillar traction and armed with machine guns, cannon, rockets, or flame throwers. The tank, together with the airplane, opened up modern warfare, which had b...

Fitzgerald, F. Scott

(Encyclopedia)Fitzgerald, F. Scott (Francis Scott Key Fitzgerald), 1896–1940, American novelist and short-story writer, b. St. Paul, Minn. He is ranked among the great American writers of the 20th cent. Fitzgeral...

Stevenson, Robert Louis

(Encyclopedia)Stevenson, Robert Louis, 1850–94, Scottish novelist, poet, and essayist, b. Edinburgh. Handicapped from youth by delicate health, he struggled all his life against tuberculosis. He studied law and w...

natural rights

(Encyclopedia)natural rights, political theory that maintains that an individual enters into society with certain basic rights and that no government can deny these rights. The modern idea of natural rights grew ou...

Formula One

(Encyclopedia)Formula One (F1), type of racecar used in Grand Prix automobile racing. Capable of speeds exceeding 230 mph (370 kph), the technologically sophisticated F1 cars are low-slung, open-wheeled, single-sea...

modern architecture

(Encyclopedia)modern architecture, new architectural style that emerged in many Western countries in the decade after World War I. It was based on the “rational” use of modern materials, the principles of funct...

mandates

(Encyclopedia)mandates, system of trusteeships established by Article 22 of the Covenant of the League of Nations for the administration of former Turkish territories and of former German colonies. As finally adopt...

Poincaré, Raymond

(Encyclopedia)Poincaré, Raymond pwăNkärāˈ [key], 1860–1934, French statesman, president of France (1913–20); cousin of Jules Henri Poincaré. A member of the chamber of deputies from 1887, he held numerou...

flycatcher

(Encyclopedia)flycatcher, common name for various members of the Old World family Muscicapidae, insectivorous songbirds including the kingbirds, phoebes, and pewees. Flycatchers vary in color from drab to brilliant...