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Pennsylvania

(Encyclopedia) CE5 PennsylvaniaPennsylvaniapĕnsəlvāˈnyə [key], one of the Middle Atlantic states of the United States. It is bordered by New Jersey, across the Delaware River (E), Delaware (SE),…

Inventions and Discoveries

Adrenaline: (isolation of) John Jacob Abel, U.S., 1897. Aerosol can: Erik Rotheim, Norway, 1926. Air brake: George Westinghouse, U.S., 1868. Air conditioning: Willis Carrier, U.S., 1911.…

Civil War, in U.S. history

(Encyclopedia) Civil War, in U.S. history, conflict (1861–65) between the Northern states (the Union) and the Southern states that seceded from the Union and formed the Confederacy. It is generally…

South Africa

(Encyclopedia) CE5 South Africa, Afrikaans Suid-Afrika, officially Republic of South Africa, republic (2015 est. pop. 55,291,000), 471,359 sq mi (1,220,813 sq km), S Africa. It borders on the…