A government run by the wealthy or richest class is called a Plutocracy. The word comes from the Greek 'ploutos' meaning wealth.

১. Aristocracy refers to government by the nobility or privileged upper class.
২. Oligarchy is a system where power rests with a small group of people, not necessarily based on wealth.
৩. Cryptocracy refers to a hidden or secret government that operates behind the scenes.

অতিরিক্ত তথ্য: In a Plutocracy, economic inequality is usually very high.