Tuesday, 12 June 2012

Stone

Stone
This is a list of the main divisions by continent and region. Dating also varies considerably and those given are broad approximations across wide areas.The three-age system has been used in many areas, referring to the prehistorical and historical periods identified by tool manufacture and use, of Stone AgeBronze Age and Iron Age. Since these ages are distinguished by the development of technology, it is natural that the dates to which these refer vary in different parts of the world. In many regions, the term Stone Age is no longer used, as it has been replaced by more specific geological periods. 
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