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Antarctica

(Encyclopedia)CE5 Antarctica ăntärkˈtĭkə, –ärˈtĭkə [key], the fifth largest continent, c.5,500,000 sq mi (14,245,000 sq km), asymmetrically centered on the South Pole and almost entirely within the An...

space exploration

(Encyclopedia)CE5 Moon mission assembly CE5 Stages in a moon mission shown counterclockwise from launching on the first day to splashdown on the ninth day. space exploration, the investigation of physical co...

United States

(Encyclopedia)CE5 CE5 CE5 United States, officially United States of America, republic (2015 est. pop. 319,929,000), 3,539,227 sq mi (9,166,598 sq km), North America. The United States is the world's third l...

Algeria

(Encyclopedia)CE5 Algeria ăljērˈēə [key], Arab. Al Djazair, Fr. Algérie, officially People's Democratic Republic of Algeria, republic (2021 est. pop. 45,011,252), 919,590 sq mi...

slavery

(Encyclopedia)slavery, historicially, an institution based on a relationship of dominance and submission, whereby one person owns another and can exact from that person labor or other services. Slavery has been fou...

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 known in the So...

opera

(Encyclopedia)opera, drama set to music. In the early part of the 20th cent. the foremost operatic composer was Richard Strauss. Although influenced by Wagner, he composed operas with even richer and more stunnin...

Venezuela

(Encyclopedia)CE5 Venezuela vĕnəzwāˈlə, Span. vānāswāˈlä [key], officially the Bolivarian Republic of Venezuela, republic (2015 est. pop. 29,275,000), 352,143 sq mi (912,050 sq km), N South America. Ve...

Brazil

(Encyclopedia)CE5 Brazil brəzĭlˈ [key], Port. Brasil, officially Federative Republic of Brazil, repub...

Argentina

(Encyclopedia)CE5 Argentina ärjəntēˈnə, Span. ärhāntēˈnä [key], officially Argentine Republic, republic (2020 est. pop. 45,380,000), 1,072,157 sq mi (2,776,889 sq k...