The first semi-permanent settlements appeared in Florida around 5000 B.C.
10
Although African-Americans make up only 13% of the U.S. population, they accounted for one half of the estimated new HIV/AIDS diagnoses in 2004.
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A Native American tribe in South Dakota collects bottle caps left by campers, using them as currency. Several banks in the area now recognize the caps as legal tender.
225
The United States does not have an official language.
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The average American spends a third of their overall time online playing games and using social networks.
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In 1700s, the deer skin was a common medium of exchange between the trading settlers and the native Red Indians in America. This is how a buck became a slang for a dollar.
28
One million Americans, about 3,000 each day, take up smoking each year. Most of them are children.
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