Under feudalism, lords were responsible for ruling different regions of a country.
These regions were given as a fief to the Lord by the King or a higher rank Lord in return for their loyalty and service.
Depending on the kingdom, this alliance between the King and his vassal could be inherited. If the king needed so, the Lord had to pay service of arms, gathering knights and soldiers for war. They also had to protect the land given and the people living in it for the King.
This was necessary for kings in Middle Ages because they didn’t have enough power and an army to protect their realms from invasions and raids. Lords were the ones who had private armies, so they could actually protect the country. This is why they became responsible for ruling different regions.
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There is the Gulf of Alaska, the Bering Sea, Chukchi Sea, and Beaufort Sea.
They are expressing "differential association".
Differential association, in criminology is a hypothesis created by Edwin Sutherland recommending that through interacting with others, people take in the qualities, dispositions, methods, and thought processes in criminal conduct. The differential association is the most discussed of the learning theories of deviance. This hypothesis centers around how people figure out how to end up wrongdoers, yet does not worry about why they move toward becoming offenders.