Three-age system

From Wikinfo

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:

• the stone age
• the bronze age
• the iron age

It was introduced by the Dane [[Christian J�rgensen Thomsen]] in the 1820s in order to classify artifacts in the collection which later became the Danish National Museum for History.

References

• Adapted from the Wikipedia article, "Three-age_system" http://en.wikipedia.org/wiki/Three-age_system, used under the GNU Free Documentation License