What one characteristic did all six societies share?

The one characteristic shared among all six societies is "Technology".

Explanation:

There are six types of societies  considered for study and analysis: Hunting and gathering societies, Pastoral societies, Horticultural societies, Agricultural societies, Industrial societies and Post-industrial societies. Although there are number of characteristics which make them different from each other but the one characteristic shared among all six societies is "Technology".

This synergistic interactivity has taken place since the first appearance of humanity and developed with the invention of simple tools and continues into modern technologies which replaced up to an extent manpower into machine power.

The seven very basic technologies which were common and now categorized for studying are like Agriculture and Bio-Technology, Energy and Power Technology, Construction Technology, Manufacturing Technology, Transportation Technology, Medical Technology, Information and Communication Technology.

an ethnic enclave is a geographic area with high ethnic concentration,

these acts divided the south into five military districts.