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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There are six times as many people of Irish descent living in America than in Ireland.
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Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
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50% of pizzas in America are pepperoni.
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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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Each year, around 24,000 Americans are bitten by rats!
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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 United States does not have an official language.
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