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This collection of notes is part of [1].
'Brief ancient chronology' in https://en.wikipedia.org/wiki/Timeline_of_ancient_history
https://en.wikipedia.org/wiki/Ancient_history#Prominent_civilizations
https://en.wikipedia.org/wiki/Hydraulic_empire
The First positional number system was the Babylonian base 60 system, ~2000 BC; https://en.wikipedia.org/wiki/Babylonian_numerals
https://en.m.wikipedia.org/wiki/Assyrian_Empire 1250 BC to 612 BC "in the 8th century BC, Assyria emerged as the most powerful state of the Ancient Near East, eclipsing Babylonia and Egypt."
