What is a government ruled by the upper classes?

A government ruled by the upper classes is known as an oligarchy. In this system, power is concentrated in the hands of a small, privileged group, typically consisting of wealthy individuals, aristocrats, or elites who control political decision-making. This can lead to policies that favor the interests of the upper classes over the needs of the broader population, often resulting in social and economic inequality. Oligarchies can exist within various forms of government, including democracies, where the influence of wealth can shape governance.