That's incorrect. Within the United States there's tons of different dialects. Look up "Minnesotan accent" and "Brooklyn accent.

中国话里有很多方言，英语除了有美音和英音，是否也存在不同的方言？

youdao

As Dean, the twenty-eight-year-old Minnesotan Garrett Hedlund is physically alive, and often naked, with a husky bedroom voice, too.

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But said with a Minnesotan accent, you can imagine exactly how folks in Minnesota are feeling just about now.

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Minnesotan Andrew John Arlotta dated a woman for a year back in 2008-2009.

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