The first female self-made millionaire in America was a black woman.
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The United States does not have an official language.
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Colorado switched mile marker "420" to "419.99" to stop people from stealing it.
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Teddy bears were named after U.S. President Theodore 'Teddy' Roosevelt.
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In downtown Churchill, Manitoba, it's illegal to lock your car doors in case someone needs to escape from a polar bear.
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Harvard earns enough money from interest on its endowment that it could offer free tuition to every student and still profit.
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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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