While pastoral and horticultural societies used small, temporary tools such as digging sticks or hoes, agricultural societies relied on permanent tools for survival. Around 3000 B.C.E., an explosion of new technology known as the Agricultural Revolution made farming possible—and profitable. Farmers learned to rotate the types of crops grown on their fields and to reuse waste products such as manure as fertilizer, which led to better harvests and bigger surpluses of food. New tools for digging and harvesting were made of metal, and this made them more effective and longer lasting. Human settlements grew into towns and cities, and particularly bountiful regions became centers of trade and commerce.
This is also the age in which people had the time and comfort to engage in more contemplative and thoughtful activities, such as music, poetry, and philosophy. This period became referred to as the “dawn of civilization” by some because of the development of leisure and humanities. Craftspeople were able to support themselves through the production of creative, decorative, or thought-provoking aesthetic objects and writings.
As resources became more plentiful, social classes became more divisive. Those who had more resources could afford better living and developed into a class of nobility. Difference in social standing between men and women increased. As cities expanded, ownership and preservation of resources became a pressing concern.