Scythians were Athenians’ slaves, and it was as so: Scythian armed groups patrolled cities of the Athenian Union and could arrest any townsman, even an aristocrat.
Jews were Egyptians’ slaves, but occupied the highest public positions, were perfectly armed, left Egypt, paying no attention to their owners, and during their campaign easily won other armies.
Circassians were the Ottomans’ slaves, but they commanded armies, the fleet and even the finance of the Empire. The appreciable part of sultans were Circassians on their mother’s side, that is, the supreme authority in the Empire was shifted on Circassian blood.
In Western Europe countries, the phenomenon of hereditary slavery of the highest state elite was not noted; it is typical only for its historical opponents.