In ancient geography, the comparatively fertile region in southwestern and southern Arabia (in present-day Asir and Yemen), a region that contrasted with Arabia Deserta in barren central and northern Arabia and with Arabia Petraea (“Stony Arabia”) in northwestern Arabia, which came under the suzerainty of imperial Rome. The Greeks and Romans chose the name because
Mathematical statement containing one or more derivatives, that is, terms representing the relationships between the rates of change of continuously varying quantities. Differential equations are very common in science and engineering, other fields of quantitative study. The solution of a differential equation is, in general, an algebraic equation expressing
Franz Anton was the son of Friedrich, Count von Thun und Hohenstein, and he shared the moderate pro-Czech
In full Tlaxcala De Xicohténcatl, town, capital of Tlaxcala estado (“state”), east-central Mexico. It lies along the Zahuapan River at the northwest foot of La Malinche volcano, 7,388 feet (2,252 m) above sea level. The city lies in the region inhabited by the Tlaxcalan Indians, and the designation “de Xicohténcatl” commemorates a Tlaxcalan chieftain who vigorously opposed his people's aid to the Spanish conquistador
Albert John Mvumbi (Zulu: “Continuous Rain”) Luthuli was born in Rhodesia, where his father, John Bunyan
Baha' ad-Din Zuhayr studied at Qus, a centre of trade and scholarship in Upper Egypt, and eventually moved to Cairo. There he entered the service of the Ayyubid prince as-Salih Ayyub, serving as the prince's secretary on a campaign in Syria in 1232. During an Ayyubid family dispute in 1239, as-Sali
Dublin theatre, established in 1904. It grew out of the Irish Literary Theatre (founded in 1899 by William Butler Yeats and Isabella Augusta, Lady Gregory, and devoted to fostering Irish poetic drama), which in 1902 was taken over by the Irish National Dramatic Society, led by W.G. and Frank J. Fay and formed to present Irish actors in Irish plays. In 1903 this became the Irish National Theatre
Former (until 1973) county, Northern Ireland. It was bounded by the former counties of Londonderry (north) and Fermanagh and Monaghan (south), and by former County Armagh and Lough (lake) Neagh (east). It had an area of 1,260 square miles (3,263 square km). In the north, the Sperrin Mountains rise to 2,224 feet (678 m), the highest peaks being Sawel and Mullaghcloga. To the southwest, Bessy Bell (1,387 feet) and Mary Gray
The secondary product line of the aerospace industry comprises the numerous onboard subsystems required by the designs of the various flight vehicles. Propulsion and avionics are the two most important secondary systems. The industry's tertiary product line includes those ground-based items necessary for the support of flight vehicles.
Habash was forced to flee Palestine in 1948, after the State of Israel was established there, and earned a medical degree at the American University in Beirut, Lebanon. In the early 1950s he was active in the “Youth of Vengeance” group, which advocated violent
