c. 3500 BC: Pictographic proto-writing starts developing towards writing proper in Sumer, thus starting what is technically considered history.
c. 3500 BC: The first monument of which there is still a trace (Duma na nGiall) is built on the Hill of Tara, the ancient seat of the High King of Ireland.[2]
c. 3484 BC: The oldest estimated germination of Alerce Milenario with more conservative dates of only ‘c.1653 BC’.[4]
Sovereign states
References
^World's First Zoo - Hierakonpolis, Egypt, Archaeology Magazine, http://www.archaeology.org/1001/topten/egypt.html Archived 2010-07-12 at the Wayback Machine
^Memory and Monuments at the Hill of Tara by Erin McDonald, Chronika Journal
^"Global Volcanism Program | Isarog". Smithsonian Institution | Global Volcanism Program. Retrieved 2021-01-22.
^POPKIN, GABRIEL (2022-05-20). "Is the world's oldest tree growing in a ravine in Chile?". www.science.org.