They don't. They simply have different spellings for words from other countries such as the UK for example.
The correct spelling of the proper term is American.
proper English metre American spelling meter
The correct spelling of the proper noun (a Central American country) is Nicaragua.
The correct spelling of the proper noun is Argentina (a South American country).
Spelling & Proper Grammar, for one.
That is the correct spelling of the proper noun (Native American tribal name) "Wampanoag."
That is the proper spelling, "thought" for the process of thinking.
That is the correct spelling of the word "proper" (correct, appropriate).The proper spelling is "proper" (correct, appropriate).
No, difficulty is a common noun.
The proper spelling for "Granddad" is with two d's.
No, it will be a spelling mistake so you should use the proper spelling
The proper South African spelling of "authorisation" includes the "s" rather than a "z," making it "authorisation." This aligns with British English conventions, which are commonly used in South Africa. The spelling "authorization" with a "z" is typically used in American English.