A more thorough explanation:

Definition: A state religion is a religion that is promoted, taught, or enforced by a government's acts to the exclusion of other religions.

Explanation: A state religion is a religion that is officially recognized and supported by a government. This means that the government may provide funding or other resources to support the religion, and may also require its citizens to practice or adhere to that religion. In some cases, the government may even punish those who do not follow the state religion.

Examples: One example of a state religion is Islam in Saudi Arabia. The government of Saudi Arabia promotes and enforces the practice of Islam, and citizens who do not follow the religion may face legal consequences. Another example is the Church of England, which is the official state religion of England. The monarch of England is also the head of the Church of England, and the government provides funding and support for the church.

Illustration: In Saudi Arabia, the government requires all citizens to practice Islam and follow its teachings. Non-Muslim religious practices are not allowed in public, and those who violate this law may face punishment. This illustrates how a state religion can be used to control the beliefs and practices of a population.