Under what system of government are leaders typically chosen by church officials or religious leaders?

In a theocracy, leaders are typically chosen by church officials or religious leaders. This system of government is based on religious law and principles, where political authority is often intertwined with spiritual authority. In theocracies, governance is often derived from a particular faith, and leaders may be seen as representatives of a divine will. Examples include Iran and Vatican City, where religious leaders hold significant political power.