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so which one is the correct spelling? or it's just the difference of British and American english? (i'm just guessing here.)

please help. thx Emotion: smile
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They are both correct. As are honor/honour, color/colour, humor/humour...
I think in the US they use "or", and in Canada and the UK, they use "our". I don't know about other countries.
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Alc07I think in the US they use "or", and in Canada and the UK, they use "our".

Correct https://en.wikipedia.org/wiki/American_and_British_English_spelling_differences#Latin-derived_spe...