Final answer:
Limited government is the principle of democracy that ensures citizens' freedom by restricting governmental power to prevent abuse and protect individual freedoms.
Step-by-step explanation:
The principle of democracy that helps ensure citizens freedom is limited government. This principle is designed to restrict the power that any one person or body within the government can hold, ensuring that elected officials cannot abuse their position and that citizens' freedoms are protected.
Constitutionalism, a concept closely related to limited government, balances the authority of the government with the fundamental rights and freedoms of the individual, often laid out in a bill of rights within a constitution. Democracies operate under the rule of law, with elected leaders constrained in their actions by the terms set forth in the nation's constitution.