This is an Historic Add-In for the genealogy software Webtrees. It is a fork of Murwell's Holocaust Timeline visit https://tech.emlekezik.com/2022/04/04/adding-a-holocaust-historical-timeline-to-webtrees-genealogy-website.html https://emlekezik.com/tree/tree1/individual/I0006/Erika-Weiser.
The data for this timeline are used in the classical three-age-system in archeology and the periodization mentioned in Wikipedia: https://en.wikipedia.org/wiki/Mesopotamia#History