Ortega y Gasset, José. 1883-1955. Spanish philosopher: Terra de Nuestra Tiempo 1923. Revolt of the Masses 1929.

Orthodox Church, Eastern. 1054-. Autonomous Christian churches of Middle East, Eastern Europe, Russia using Byzantine rite. East-West Schism.

Orwell, George. 1903-50. English satirical novelist and social critic: Animal Farm 1945, 1984 1948.

Osama bin Laden. 1957-. Wahabi Saudi Arabian construction magnate turned terrorist. World Trade Center. Taliban. al-Qaeda.

Osborne, John. 1929-94. ‘Angry’ English playwright. Entertainer 1951. Look Back in Anger 1956.

Oscar I. 1799-1859. King of Norway and Sweden 1844-. Liberal reforms.

Osiris. Vegetation god who introduced civilization to Egypt. God of underworld.

OSS. Office of Strategic Services. 1942-45. Precursor to CIA.

Ostracism. Athenian 10 year exile for disrupting stability.

Ostrogoths. Germanic peoples. 3C Ukraine kingdom. 406 kingdom in Italy. 370 conquered by Huns. 493 conquered Italy. 555 dispersed by Justinian. Goths.

Oswald. St. -641. King 633-, reunited Northumbria.

Oswy. -670. King of Bernicia 641-, Northumbria 655-. United most of S. England.

Otakar II. -1278. King of Bohemia 1252-. Killed at Dürnkrut opposing HRE Rudolf I.

Ottawa Conference. 1932. British Empire creates Imperial Preference during Depression.

Otto, Nikolaus. 1832-91. Built 4 Cycle engine 1876.

Otto I. 1815-67. German king of Greece 1832-62. Selected by London Conference. Deposed. Wittelsbach.

Otto I. The Great. 912-73. King of Germany, 936-. Founded Holy Roman Empire, 962. Deposed Pope John XII.

Ottoman Empire. 1300-1922. Turkish empire in Balkans, Near East, N Africa. Conquered Byzantine Empire. 1402 Destroyed by Tamerlane. 1413 Rebuilt by Mehmed. 1453 Conquered Constantinople. Eastern Question. Mehmed II. Süleiman the Magnificent. Turkey.

Oudenaarde, Battle. 1708. Churchill, Prince Eugène defeat French.

Oughtred, Wm. 1574-1660. English. Slide rule c1630 (circular), 1633 (rectilinear).

Outer Space Treaty. 1967. International cooperation in space. Controlled military uses. 70+ signatories.

Owen, Robert. 1771-1858. Welsh socialist. Began utopian cooperatives in England and US. Lanark 1799. Rochdale 1844.

Owens, Jesse. 1913-80. Black US athlete. 4 golds at 1936 Berlin Olympics contradicted Hitler’s Aryan supremacy.

Oxford English Dictionary. 1884-1928. 10 volumes, 2.4 million quotations. OED2 1989. James Murray.

Oxford Group. 1921- Early form of Buchmanism stressing group confessions.

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