Legitimation refers to the process by which a state gains and maintains acceptance and belief in its right to rule from its citizens. It is crucial for political stability and effective governance. Max Weber identified three ideal types of legitimate authority: traditional (based on custom and historical precedent), charismatic (based on the personal qualities of a leader), and rational-legal (based on established laws and procedures).

Modern states primarily rely on rational-legal legitimacy, often manifested through democratic elections, which confer popular mandate. Other key tools of legitimation include the rule of law, ensuring that governance is predictable and fair; the provision of public goods and services (e.g., security, infrastructure, welfare) that demonstrate the state's capacity to serve its citizens; the cultivation of national identity and shared values through education and symbols; and the effective use of ideology and communication to shape public opinion. A state's performance, particularly in maintaining economic stability and security, also significantly contributes to its perceived legitimacy.