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M$1 Answer
According to http://www.buzzle.com/editorials/4-24-2006-94216.asp it is not really known who inveted it but there are some possibilities like the Taino Indian word barbacoa means meat-smoking apparatus. Or in America, barbecue originated in the late years of the 19th century during Western cattle drives. It would be interesting to know who invented it and how they came about to inventing it.
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M$
Thanks voter!