Columbia Encyclopedia

(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...

(Encyclopedia) Harlem River, navigable tidal channel, 8 mi (12.9 km) long with Spuyten Duyvil Creek, in New York City, SE N.Y., separating Manhattan from the Bronx. Connecting the Hudson and East rivers, it is a shi...

(Encyclopedia) Rio Grande rēˈō grănd, rēˈō gränˈdē [key], river, c.1,885 mi (3,000 km) long, rising in SW Colo. in the San Juan Mts. and flowing south through the middle of N.Mex., past Albuquerque, then c...

(Encyclopedia) United States Naval Observatory, a federal astronomical observatory, located in Washington, D. C. It evolved from the Navy's oldest scientific institution, the Depot of Charts and Instruments, founded...

(Encyclopedia) Staten Island (1990 pop. 378,977), 59 sq mi (160 sq km), SE N.Y., in New York Bay, SW of Manhattan, forming Richmond co. of New York state and the borough of Staten Island of New York City. It is sepa...

(Encyclopedia)  CE5 Georgia jôrˈjə [key], state in the SE United States, the last of the Thirteen Colonies to be founded. It is bordered by Florida (S), Alabama (W), Tennessee and North Carolina (N), and South ...

(Encyclopedia) Ellis Island, island, c.27 acres (10.9 hectares), in Upper New York Bay, SW of Manhattan island. Government-controlled since 1808, it was long the site of an arsenal and a fort, but most famously serv...

(Encyclopedia) Quebec, Fr. Québec, city (1991 pop. 167,517), provincial capital, S Que., Canada, at the confluence of the St. Lawrence and St. Charles rivers. The population is largely French speaking, and the town...

(Encyclopedia) Homeland Security, United States Department of (DHS), executive department of the federal government charged with protecting the security of the American homeland as its main responsibility. Its prima...

(Encyclopedia) Bowery, the bouˈərē, –ˈrē [key] [Dutch Bouwerie=farm], section of lower Manhattan, New York City. The Bowery, the street that gives the area its name, was once a road to the farm of New Amsterd...