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United nations statistics division- standard country and, Numerical code: geographical region and composition of each region: 002. africa a/ 014 : eastern africa: 108 : burundi. United states: map, history from answers.com, United states, officially united states of america, republic (2005 est. pop. 295,734,000), 3,539,227 sq mi (9,166,598 sq km), north america. the united states is the. Summary of notifiable diseases --- united states, 2006, Summary of notifiable diseases --- united states, 2006. please note: errata have been published for this article. to view the errata, please click here and here..