Columbia Encyclopedia

(Encyclopedia)  CE5 Florida ...

(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) Gilbert, city (2020 pop. 267,918), Maricopa co. S central Ariz., suburb of Phoenix, located S of Mesa and E of Chandler; inc. 1920. Founded at the site ...

(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) 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...