Authoritarianism is a political system characterized by the concentration of power in a leader or an elite not accountable to the public, often limiting individual freedoms and suppressing dissent. This form of governance can manifest in various ways, such as through a single-party state, military rule, or the presence of a dictator. Authoritarian regimes typically employ mechanisms such as censorship and propaganda to maintain control and discourage opposition, impacting the policy processes in these countries.