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Three-age system
The three-age system is a system of classifying human prehistory into three consecutive time periods, named after the characteristic tool-making technology of the era:
It was introduced by the Dane Christian Jürgensen Thomsen in the 1820s in order to classify artifacts in the collection which later became the Danish National Museum for History[?].
wikipedia.org dumped 2003-03-17 with terodump |
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