Approximately 4 to 5% of the U.S. population has one or more clinically significant phobias in a given year. Specific phobias occur in people of all ages. The average age of onset for social phobia is between 15 and 20 years of age, although it can often begin in childhood.
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The first semi-permanent settlements appeared in Florida around 5000 B.C.
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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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The United States has paved enough roads to circle the Earth over 150 times.
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Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
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The Canadian province of New Brunswick (which was part of the UK at the time) had a bloodless war with the US state of Maine in 1839
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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.
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