China
Before the Qin Dynasty united China, there were many small feudal states, nominally loyal to the Zhou King, that fought each other for hundreds of years in a war to control China. The majority of these states were ruled by relatives and clansmen of the Zhou royal house and carried the surname Ji (姬) and so were tied by family bonds to the Zhou king, to whom they were ritually subordinate, as members of collateral or lesser lineages. A minority of these states, such as the Qin and Chu, were ruled by non-Zhou clansmen, and were awarded their fiefs on account of some merit. Over time, these feudal states attained to power and wealth, that exceeded that of their Zhou nominal overlord, whose direct authority became confined to a very small territory near present-day Zhengzhou. These states also began to acquire some distinctive characteristics and identities of their own during the long centuries of loose control by the Zhou. Eventually, the Zhou kings were eclipsed in power by two especially problematic vassals - the Qin and Chu, and the functional independence of the Qin later led to its gradual conquest of all other vassal states and the formal supplantation of the Zhou to form a heavily centralised Empire.