Pre-Mechanical Age (1 gen 3000 anni a. C. – 1 gen 1450 anni)
Descrizione:
Keeping account of information included to pictographs and imagery. Usually non-formal accounts and writing dominates this time period for people not in ruling classes, generally literacy is low.https://ehs.siu.edu/_common/documents/IT%20newsletter/vol-2-no-29.pdf
Aggiunto al nastro di tempo:
Data:
1 gen 3000 anni a. C.
1 gen 1450 anni
~ 4452 years