4760 BC to 4,520: A mostly pre-historic world timeline including: polar precession, Russia, China, Copper age, and more.
4630 BC, Oregon, USA: Mount Mazama(Crater Lake), Cascade Volcanic Arc, partially responsible for Crater Lake. Ejecta 100 km3/
4,600 BC to 3,800 BC: There are archaeological earthworks similar to those at Watson Break in Louisiana in Lowndes county, Mississippi which is carbon dated to this time frame.
~ Multicolored ceramic-ware originating in Russia Reached China.
~ USA: In Lowndes county of Mississippi. This Vaughan mound site dates well into the Middle Archaic period and is part of the evidence pointing to earthworks being built in Mississippi at this time.
4,540 BC: Polar precession at zero. Approximate 26,000 year cycle. Ram
4,500 BC to 2,100 BC: the span of the Grisi state. Grisi began as a Copper Age state.
~ There is substantial evidence that Sri Lanka once was land linked to India, probably much man made, perhaps with help.
~ to 4,000 BC: North America: There was a warm climate episode in this period.
~ upper Egypt(predynastic) began a Copper Age which came to an end 3,000 BC.
~ North America: Kame grave users north of the Ohio River. Kame grave users transitioned to man made mounds. Some say beginning nothern mound building. Kame grave users were traveling the waters in dugouts and birchbark canoes and making beads of native copper.
~ Marks what has been called the midpoint of the North American Mid-Archaic period.
~ Bad-tibiria: to date, archaeological reports daring of this time to about 2,300 BC for this site. But according to the Sumerian kings List Bad-tibiria was the second(after Eridu) before the Flood.
~ about this time Mari started as a copper using state and ended in 1759 BC.
~ to 4,000 BC, North America: Warming climate episode.
~ Upper Egypt(predynastic): Began as a Copper Age state which came to an end about 3200 BC.
~ North America: This year marks the Mid-Archaic Period.