71:1.23
The embryonic state was made possible by the decline of the blood bond in favor of the territorial, and such tribal federations were usually firmly cemented by conquest. While a sovereignty that transcends all minor struggles and group differences is the characteristic of the true state, still, many classes and castes persist in the later state organizations as remnants of the clans and tribes of former days. The later and larger territorial states had a long and bitter struggle with these smaller consanguineous clan groups, the tribal government proving a valuable transition from family to state authority. During later times many clans grew out of trades and other industrial associations.