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Jones, John Paul

(Encyclopedia)Jones, John Paul, 1747–92, American naval hero, b. near Kirkcudbright, Scotland. His name was originally simply John Paul. After the Revolution Jones was sent to Europe to collect the prize mone...

Jurassic period

(Encyclopedia)Jurassic period jərăsˈĭk [key] [from the Jura Mts.], second period of the Mesozoic era of geologic time, lasting from 213 to 144 million years ago. At the start of the Jurassic most of the contine...

cabinet

(Encyclopedia)cabinet, group of advisers to the head of the state who themselves are usually the heads of the administrative government departments. The nature of the cabinet differs widely in various countries. In...

Jefferson, Thomas

(Encyclopedia)Jefferson, Thomas, 1743–1826, 3d President of the United States (1801–9), author of the Declaration of Independence, and apostle of agrarian democracy. After 1809, Jefferson lived in retirem...

Inner Mongolian Autonomous Region

(Encyclopedia)Inner Mongolian Autonomous Region, Mandarin Nei Monggol zizhiqu, autonomous region, c.455,000 sq mi (1,178,755 sq km), NE China. It is bounded on the no...

Monroe, James

(Encyclopedia)Monroe, James, 1758–1831, 5th President of the United States (1817–25), b. Westmoreland co., Va. In 1816 Monroe obtained the presidential nomination and was easily elected. During his first admi...

Permian period

(Encyclopedia)Permian period pûrˈmēən [key] [from Perm, Russia], sixth and last period of the Paleozoic era (see Geologic Timescale, tablegeologic timescale, table) from 250 to 290 million years ago. Many ma...

earthquake

(Encyclopedia)CE5 Worldwide pattern of earthquake activity: The dots indicate the epicenters of all earthquakes recorded during a recent 10-year period. CE5 earthquake, trembling or shaking movement of the ea...

commune, in medieval history

(Encyclopedia)commune kômˈyo͞on [key], in medieval history, collective institution that developed in continental Europe after the fall of the Roman Empire. Because of the importance of the commune in municipal g...

Ohio, river, United States

(Encyclopedia)Ohio, river, 981 mi (1,579 km) long, formed by the confluence of the Allegheny and Monongahela rivers in SW Pa., at Pittsburgh; it flows northwest, then generally southwest to enter the Mississippi Ri...