22 mar 2000 año aC - 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.
Añadido al timeline:
fecha:
22 mar 2000 año aC
Ahora mismo
~ 4028 years ago