In reply to Miroslav Glavić.

I’m Polish. From my experience as a translator and former teacher of English as a foreign language, most people outside the UK don’t really care which variant they use, with some not being aware of the differences at all. It’s quite interesting because an overwhelming number of books for teaching EN focuses on the British variant, but because EU culture is so flooded with US influence, most people I know use a combination of the two… I would even argue – most tend to lean toward US English.

Not that it matters really, the point is to get the message across.