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Macri, Mauricio

(Encyclopedia)Macri, Mauricio, 1959–, Argentinian political leader. After graduating from the Catholic Univ. of Argentina, he was active in his family's businesses in the 1980s and 90s before becoming president o...

Webster-Ashburton Treaty

(Encyclopedia)Webster-Ashburton Treaty, Aug., 1842, agreement concluded by the United States, represented by Secretary of State Daniel Webster, and Great Britain, represented by Alexander Baring, 1st Baron Ashburto...

Sinyavsky, Andrey Donatovich

(Encyclopedia)Sinyavsky, Andrey Donatovich ŭndrāˈ dōnätˈəvyĭchˌ sĭnyäfˈskē [key], 1925–97, Russian novelist and essayist. Starting in the 1960s, Sinyavsky, a protege of Boris Pasternak, had a number ...

Vincent de Paul, Saint

(Encyclopedia)Vincent de Paul, Saint, 1580?–1660, French priest renowned for charitable work, b. Gascony. He was ordained in 1600. There are conflicting stories about his capture by pirates and enslavement in Tun...

Moscow, grand duchy of

(Encyclopedia)Moscow or Muscovy, grand duchy of, state existing in W central Russia from the late 14th to mid-16th cent., with the city of Moscow as its nucleus. Its formation and eventual ascendancy over other Rus...

Friel, Brian

(Encyclopedia)Friel, Brian frēl [key], 1929–2015, Irish playwright, b. Killyglogher, Northern Ireland. Treating themes that enmesh both Irelands, he became the most acclaimed Irish dramatist of the late 20th cen...

Tombaugh, Clyde William

(Encyclopedia)Tombaugh, Clyde William tŏmˈbô [key], 1906–97, American astronomer, b. Streator, Ill. Although lacking formal training or a college degree, he was hired in 1929 as an assistant by the Lowell Obse...

O'Connor, Feargus

(Encyclopedia)O'Connor, Feargus fûrˈgəs [key], 1794–1855, Irish Chartist leader. Elected to the Parliament of 1832 as a supporter of Daniel O'Connell, he soon quarreled with O'Connell and was forced out of Par...

Wilderness Road

(Encyclopedia)Wilderness Road, principal avenue of westward migration for U.S. pioneers from c.1790 to 1840, blazed in 1775 by the American frontiersman Daniel Boone and an advance party of the Transylvania Company...

Euler, Leonhard

(Encyclopedia)Euler, Leonhard lāˈônhärt oiˈlər [key], 1707–83, Swiss mathematician. Born and educated at Basel, where he knew the Bernoullis, he went to St. Petersburg (1727) at the invitation of Catherine ...