A republic is a form of government where the people hold power by electing representatives to make decisions and laws on their behalf. Instead of being ruled by a king or queen who inherits power, citizens in a republic choose leaders through voting, and those leaders are responsible to the people who elected them.

The United States is a republic. Americans don't vote directly on every law (which would be impossible with hundreds of millions of people), but instead elect representatives to Congress, a president, governors, and other officials who make decisions for the country. These leaders serve for limited terms, and if people don't like how they're governing, they can vote for different representatives next time.

Ancient Rome was famously a republic before it became an empire, and many modern nations have adopted this form of government.

A republic differs from a pure democracy, where citizens vote directly on every decision. It also differs from a monarchy (rule by a king or queen) or a dictatorship (rule by one person with absolute power). In a well-functioning republic, leaders are accountable to voters, laws protect individual rights, and no single person can hold unlimited power forever.