Columbia Encyclopedia

(Encyclopedia)  CE5 Asia āˈzhə [key], the world's largest continent 17,139,000 sq mi (44,390,000 sq km) and most populous (2015 est. pop. 4,419,898,000), with nearly three fifths of the world's total population...

(Encyclopedia)  CE5 Mirror arrangements for a reflecting telescope telescope, traditionally, a system of lenses, mirrors, or both, used to gather light from a distant object and form an image of it. Traditional o...

(Encyclopedia)  CE5 Armenia ärmēˈnēə [key], Armenian Hayastan, officially Republic of Armenia, republic (2020 est. pop. 2,963,000), 11,500 sq mi (29,785 sq km), in the S Caucasus....

(Encyclopedia)  CE5 Persian Empire (c.500 b.c.) Persia pûrˈzhə, –shə [key], old alternate name for the Asian country Iran. The article Iran contains a description of the geography and economy of the modern ...

(Encyclopedia) World War II, 1939–45, worldwide conflict involving every major power in the world. The two sides were generally known as the Allies and the Axis. Although hostilities came to an end in Sept...

(Encyclopedia) Union of Soviet Socialist Republics (USSR), Rus. Soyuz Sovetskikh Sotsialisticheskikh Respublik, former republic. It was established in 1922 and dissolved in 1991. The Soviet Union was the first state...

(Encyclopedia)  CE5 Roman Empire (a.d. 117) CE5 Rome, Ital. Roma, city (1991 pop. 2,775,250), capital of Italy and see of the pope, whose residence, Vatican City, is a sovereign state within the city of Rome. R...