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Russo-Turkish Wars

(Encyclopedia)Russo-Turkish Wars. The great eastward expansion of Russia in the 16th and 17th cent., during the decline of the Ottoman Empire, nevertheless left the shores of the Black Sea in the hands of the Ottom...

Murad I

(Encyclopedia)Murad I mo͞orädˈ [key], 1326?–1389, Ottoman sultan (1362?–1389), son and successor of Orkhan to the throne of the Ottoman Empire (Turkey). Murad widened the Ottoman hold on European territory, ...

Simeon I

(Encyclopedia)Simeon I, c.863–927, ruler (893–927) and later first czar of Bulgaria. He was placed on the throne by his father, Boris I, who had returned from a monastery to depose his first son, Vladimir (reig...

man, in anthropology and biology

(Encyclopedia)man: see anthropology; human evolution; race. ...

Geber, Arab alchemist and physician

(Encyclopedia)Geber: see Jabir.

Centers for Disease Control and Prevention

(Encyclopedia)Centers for Disease Control and Prevention (CDC), agency of the U.S. Public Health Service since 1973, with headquarters in Atlanta; it was established in 1946 as the Communicable Disease Center. The ...

León, region and former kingdom, Spain

(Encyclopedia)León lā-ōnˈ [key], historic region and former kingdom, NW Spain, E of Portugal and Galicia, now part of Castile–León. It includes the provinces of León, Salamanca, and Zamora, named after thei...

Madrid, autonomous community and province, Spain

(Encyclopedia)Madrid mədrĭdˈ, Span. mäᵺhrēᵺˈ [key], autonomous community and coextensive prov., (2011 pop. 6,421,874), 3,099 sq mi (8,027 sq km), central Spain. Madrid, the capital of Spain, is also its c...

Titan , in Greek religion and mythology

(Encyclopedia)Titan, in Greek religion and mythology, one of 12 primeval deities. The female Titan is also called Titaness. The Titans—six sons and six daughters—were the children of Uranus and Gaea. They were ...

Virginia Polytechnic Institute and State University

(Encyclopedia)Virginia Polytechnic Institute and State University, better known as Virginia Tech, at Blacksburg; land-grant and state supported; coeducational; chartered and opened 1872 as an agricultural and mecha...