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Sex ratio of United States
0.97 male/female
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Energy generated from United States
Fossil fuels 75%
Nuclear fuels 9%
Hydroelectricity 7%
Other renewable sources 5%
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Independence of United States
4 July 1776
National Holiday : Independence Day, 4 July
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Area of United States
9 826 675 km² (3rd)
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The population of United States
278 058 881 (3rd)
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Industries of United States
highly diversified
world leading
high-technology innovator
second largest industrial output in world; petroleum
steel
