From Wikipedia on 30-Sep-2012
URL: http://en.wikipedia.org/wiki/Civilization
Civilization (or civilisation) is a sometimes controversial term that has been used in several related ways. Primarily, the term has been used to refer to the material and instrumental side of human cultures that are complex in terms of technology, science, and division of labor. Such civilizations are generally hierarchical and urbanized. In a classical context, people were called “civilized” to set them apart from barbarians, savages, and primitive peoples while in a modern-day context, “civilized peoples” have been contrasted with indigenous peoples or tribal societies.
The word is often restricted to apply only to societies that have attained a particular level of advancement — especially the founding of cities.
The level of advancement of a civilization is often measured by its progress in agriculture, long-distance trade, occupational specialization, a special governing class, and urbanism. Aside from these core elements, a civilization is often marked by any combination of a number of secondary elements, including a developed transportation system, writing, standardized measurement, currency, contractual and tort-based legal systems, characteristic art and architecture, mathematics, enhanced scientific understanding, metallurgy, political structures, and organized religion.