THEORETICAL BACKGROUND

CONTEXT:

United states of America- EE.UU
Capital: Washington D.C
Area: 9,666,861 km 2
Total: Population: 308.745.538 (2010)
The borders of the mainland are:
     North: Canada (great lakes area)
     South: Mexico (Rio bravo), the gulf of mexico and the Atlantic              Ocean
     East: Atlantic Ocean
     West: Pacific Ocean
Political System: Federal Republic
Head of State: Barack Obama
Languages: English
Currency: U.S. Dollar