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Khiva, khanate of

(Encyclopedia)Khiva, khanate of, former state of central Asia, based on the Khiva (Khwarazm or Khorezm) oasis along the Amu Darya River. The khanate lay S of the Aral Sea and included large areas of the Kyzyl Kum a...

Leo I, Byzantine emperor

(Encyclopedia)Leo I, d. 474, Byzantine or East Roman emperor (457–74). Chosen by the senate to succeed Marcian, he sought to counteract the preponderance of Germans in the Roman army by enlisting Isaurians. A nav...

John I, Spanish king of Castile and León

(Encyclopedia)John I, 1358–90, Spanish king of Castile and León (1379–90), son and successor of Henry II. He tried unsuccessfully to unite the Portuguese and Castilian crowns but was twice defeated by the Port...

Philip II, king of Macedon

(Encyclopedia)Philip II, 382–336 b.c., king of Macedon (359–336 b.c.), son of Amyntas II. While a hostage in Thebes (367–364), he gained much knowledge of Greece and its people. He was appointed regent for Am...

John I, Byzantine emperor

(Encyclopedia)John I (John Tzimisces) tsĭmĭsˈēz [key], c.925–976, Byzantine emperor (969–76). With the aid of Emperor Nicephorus II's wife, Theophano, John had Nicephorus murdered and himself proclaimed emp...

Pisa, Council of

(Encyclopedia)Pisa, Council of, 1409, unrecognized council of the Roman Catholic Church. It was summoned to end the Great Schism (see Schism, Great) by members of the colleges of cardinals of the two rivals, Gregor...

Constantine I, Roman emperor

(Encyclopedia)Constantine I or Constantine the Great kŏnˈstəntēn, –tīn [key], 288?–337, Roman emperor, b. Naissus (present-day Niš, Serbia). He was the son of Constantius I and Helena and was named in ful...

Erfurt

(Encyclopedia)Erfurt ĕrˈfo͝ort [key], city, capital of Thuringia, central Germany, on the Gera River. It...

Robert I, French king

(Encyclopedia)Robert I, c.865–923, French king (922–23), son of Count Robert the Strong and younger brother of King Eudes. He inherited from Eudes the territory between the Seine and the Loire rivers. In 922, R...

Conrad I, ruler of the Holy Roman Empire

(Encyclopedia)Conrad I, d. 918, German king (911–18). As duke of Franconia he distinguished himself by military exploits and in 911 was elected successor to Louis the Child by the Franconian, Saxon, Bavarian, and...