Definition: Archaeologists recognize that in some cases, in some places, at some times, simple societies for one reason and another morph into more and more complex societies, and some become civilizations. The reasons for this are quite controversial, but the characteristics of complexity recognized in ancient civilizations are pretty much agreed upon:
- social stratification and ranking,
- increasing sedentism,
- trade or exchange networks, leading to the presence of
- luxury and exotic goods (such as the baltic amber trade),
- metallurgy,
- craft specialization,
- control of food as in agriculture or pastoralism,
- high population density,
- monumental architecture,
- writing system,
- calendar,
- centralized rule, and
- armed military force.
This glossary entry is part of the Dictionary of Archaeology. Sources for the term include the references listed on the front page of the Dictionary, and the websites listed in the sidebar. Any mistakes are the responsibility of Kris Hirst.

