22 marzo 2000 anni a. C. - began to transform human societies, began specialization of labor, social stratification, increased trade, coplex government systems, armies, increase population, increase urbanization. New technological innovations like iron weapons, chariots,, some record keepings like hieroglyphics, pictographs, alphabets. Monumetal architecture: pyramids, temples, defencive walls, roads, water systems and law codes.
Aggiunto al nastro di tempo:
Data:
22 marzo 2000 anni a. C.
Adesso
~ 4028 years ago