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Piaget, Jean

(Encyclopedia)Piaget, Jean zhäNpyäˈjā [key], 1896–1980, Swiss psychologist, known for his research in developmental psychology. After receiving a degree in zoology from the Univ. of Neuchâtel (1918), Piaget'...

Servetus, Michael

(Encyclopedia)Servetus, Michael sərvēˈtəs [key], 1511–53, Spanish theologian and physician. His name in Spanish was Miguel Serveto. In his early years he came in contact with some of the leading reformers in ...

Vatican Council, Second

(Encyclopedia)Vatican Council, Second, popularly called Vatican II, 1962–65, the 21st ecumenical council (see council, ecumenical) of the Roman Catholic Church, convened by Pope John XXIII and continued under Pau...

Pan-Americanism

(Encyclopedia)Pan-Americanism, movement toward commercial, social, economic, military, and political cooperation among the nations of North, Central, and South America. In the early 20th cent., U.S. manipulation ...

Versailles, Treaty of

(Encyclopedia)Versailles, Treaty of, any of several treaties signed in the palace of Versailles, France. For the Treaty of Versailles of 1783, which ended the American Revolution, see Paris, Treaty of, 1783. The...

Drago, Luis María

(Encyclopedia)Drago, Luis María lo͞oēsˈ märēˈä dräˈgō [key], 1859–1921, Argentine statesman, jurist, and writer on international law. As minister of foreign affairs under Julio A. Roca, he dispatched (...

Chavín de Huántar

(Encyclopedia)Chavín de Huántar chävēnˈ dā wänˈtär [key], archaeological site in the northeastern highlands of Peru, near the headwaters of the Marañon River. It flourished between c.900 b.c. and 200 b.c....

Choate, Joseph Hodges

(Encyclopedia)Choate, Joseph Hodges chōt [key], 1832–1917, American lawyer and diplomat, b. Salem, Mass.; nephew of Rufus Choate. After being admitted (1855) to the bar, he moved to New York City. His legal care...

Jackson, Jesse Louis

(Encyclopedia)Jackson, Jesse Louis, 1941–, African-American political leader, clergyman, and civil-rights activist, b. Greenville, S.C. Raised in poverty, he attended the Chicago Theological Seminary (1963–65) ...

Mboya, Thomas Joseph

(Encyclopedia)Mboya, Thomas Joseph mboiˈə [key], 1930–69, Kenyan political leader. The son of a Luo farmer, he was born in the “white highlands” of Kenya and educated at Roman Catholic mission schools. Earl...