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Rodríguez, Martín

(Encyclopedia)Rodríguez, Martín rôᵺrēˈgās [key], 1771–1844, Argentine general, governor of Buenos Aires prov. (1820–24). With Juan Martín de Pueyrredón, he organized a force to expel the British invad...

open education

(Encyclopedia)open education, also known as open classroom, type of educational reform. The central tenet of this informal system is that children want to learn and will do so naturally if left to their own initiat...

Rulers of France since 987 (table)

(Encyclopedia)Rulers of France since 987(including dates of reign) The Capetians House of Valois House of Bourbon The First Republic The First Empire Bourbon Restoration House of Bourbon-Orléans T...

plagues of Egypt

(Encyclopedia)plagues of Egypt, in the Bible, the plagues and other troubles brought on Egypt by God through the hands of Moses, because Pharaoh would not let the people of Israel go out of Egypt. The account, in t...

center of mass

(Encyclopedia)center of mass, the point at which all the mass of a body may be considered to be concentrated in analyzing its motion. The center of mass of a sphere of uniform density coincides with the center of t...

York, house of

(Encyclopedia)York, house of, royal house of England, deriving its name from the creation of Edmund of Langley, fifth son of Edward III, as duke of York in 1385. The claims to the throne of Edmund's grandson, Richa...

conflict of laws

(Encyclopedia)conflict of laws, that part of the law in each state, country, or other jurisdiction that determines whether, in dealing with a particular legal situation, its law or the law of some other jurisdictio...

Bondfield, Margaret Grace

(Encyclopedia)Bondfield, Margaret Grace, 1873–1953, British political and trade union leader. A Labour member of Parliament (1923–24, 1926–31), she served as secretary to the minister of labor (1924) and, und...

Arbuthnot, John

(Encyclopedia)Arbuthnot, John ärbŭthˈnət, ärˈbəthnŏt [key], 1667–1735, Scottish author and scientist, court physician (1705–14) to Queen Anne. He is best remembered for his five “John Bull” pamphlet...

Provisions of Oxford

(Encyclopedia)Provisions of Oxford, 1258, a scheme of governmental reform forced upon Henry III of England by his barons. In 1258 a group of barons, angered by the king's Sicilian adventure and the expenditures it ...