In political science, what is the term for a system where political power is concentrated in the hands of a single ruler who often maintains control through hereditary succession?

Who is known for the concept of "invisible hand," suggesting that individual pursuit of self-interest unintentionally contributes to the overall good of society?

Who is known for the concept of "the public sphere," which refers to spaces where citizens engage in open and critical discussions about public matters?

What is the term for a government structure where power is concentrated in the hands of a single ruler with absolute authority and often involves hereditary succession?

Who is known for the concept of "political realism," which emphasizes power, national interest, and the pursuit of self-interest in international relations?

In political science, what is the term for a system where political power is concentrated in the hands of a small group of individuals or organizations with common interests?