American English is the variety of English spoken in the United States, where English is the de facto national language. While there is no official language at the federal level, 80% of the U.S. population claims English as their mother tongue and 95% claim to speak it well or very well.

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2. Barack Obama
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3. Flag of the USA

4. What is the mother tongue of this country?
The variety of English spoken
in the United States is known as
American English. English is
the de facto national
language of the United States,
with 80% of the population
claiming it as a mother tongue,
and some 95% claiming to speak
it "well" or "very well".[5]
However, no official language
exists at the federal level.