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) 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) Crawfordsville, city (2020 pop. 16,306), seat of Montgomery co., W central Ind.; inc. 1866. It is the trading center of an agricultural and dairy region...

(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) Long Island (1990 pop. 6,861,454), 1,723 sq mi (4,463 sq km), 118 mi (190 km) long, and from 12 to 20 mi (19–32 km) wide, SE N.Y.; fourth largest island of the United States and the largest outside ...

(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) 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) Sydney, city (1991 pop. 26,063), Cape Breton Island, N.S., Canada, on the northeast coast at the head of the South Arm of Sydney Harbour. It is the port and the commercial, trade, and industrial cente...

(Encyclopedia) State, United States Department of, executive department of the federal government responsible, under the President's direction, for the making and execution of American foreign policy. Before and ...

(Encyclopedia) Vandalia văndāˈlyə [key], city (1990 pop. 13,882), Montgomery co., W central Ohio, a suburb of Dayton; inc. 1848. Motor vehicle parts are among the city's manufactures. National skeet-shooting com...