Era beginning/end
By 3000 BCE, city-states had collectively formed civilization with government, religion, division of labour, and writing. The Bronze Age was marked by the use of copper and then bronze by the prehistoric peoples, who used such metals to fashion tools. In some areas, the Bronze Age saw the widespread adoption of agriculture. The pottery wheel.
Rise of civilization, including craft and trade. Urban centers surrounded by politically attached communities. Rise of city-states, ethnic gods, and state religion.