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'the USA' vs. 'the US' - English Language & Usage Stack Exchange
capitalization - United States Military: Should the word "military" …
Origin, meaning, and derivation of 'boof' as a verb in U.S. slang
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Addressing a former office-holder by that office's title
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grammaticality - Need for using the article "the" before "United …
AM/PM vs a.m./p.m. vs am/pm - English Language & Usage Stack …
What is the difference between 20$ and $20? [closed]