By definition, aristocracy already has power. Therefore the question must be "How do aristocracies originate?"
Generally and historically speaking, aristocracies are created through the use of force or the threat of using force against weaker members of a society. By these methods wealth is created by the aggressors by either demanding payments from the weakest members, or by warring with weaker peoples and stealing their land and precious metals like gold.
Land ownership is key to making aristocracies. The land is cultivated, farm products sold, and wealth is created.
With weaker people subdued, and the stronger people now wealthy, the goal becomes on how to keep the wealth or expand it.
With the wealth acquired, a government is usually created by these wealthy aristocrats and with the power of government, the aristocracies pass laws that inhibit other people from joining the wealthy class unless it is to the benefit of them to include new members.
The wealth is passed down from generation to generation and the "class" of aristocrats become a mainstay of a society.
In summary, by power wealth is created and with power it is maintained and done so with the threat of power.
It creates stability. Since aristocracy is inherited, the sons (and sometimes daughters) are trained to take over the fathers' duties. A formal aristocracy saves the very rich class the need to spend money to corrupt government officials and spend billions $ on influencing election results.
Aristocracy is a type of government.
Planter Aristocracy is a tobacco and slavery powered form of democracy titled the planter aristocracy.
Saudi Arabia is an aristocracy.
An aristocracy.
The aristocracy are the nobles of a country. A country ruled by such people may also be called an aristocracy
American Aristocracy was created in 1916.
The Greek meaning for aristocracy is αριστοκρατία.
The aristocracy always has more than the ordinary person. People love reading about what the aristocracy is doing.
The opposite of aristocracy (heriditary nobility) would be commoners.
They were 'government by foreigners' which is not meritocracy or aristocracy.
The duration of American Aristocracy is 3120.0 seconds.