Government by one person is known as Autocracy.
In an autocracy, all powers of governance are concentrated in the hands of a single individual. This person possesses supreme and absolute authority over the government and its people. The autocrat is not bound by any constitution, laws, or political opposition, and citizens have no effective role in decision-making or policy formation.
Such a form of government is characterized by centralized control, lack of democratic institutions, and the ruler’s dominance over legislative, executive, and judicial functions. The ruler’s decisions are final and unquestionable, often leading to limited political freedoms and suppression of dissent.
Examples of autocratic governments include absolute monarchies and certain dictatorial regimes where a single leader determines national policy, controls state machinery, and exercises unchecked authority.
Hence, when power is entirely vested in one individual who governs according to personal will, the system is called Autocracy.
Final Answer: Autocracy