This document discusses state religions and secular states. It defines a state religion as a religious body or creed officially endorsed by the state, though the state is not necessarily a theocracy. State religions vary in the degree of state backing and support they receive. Some communist states sponsor official state religions to prevent alternate sources of authority. A secular state does not favor any particular religion and follows civil rather than religious laws. The document provides examples of state religions and policies in different countries and eras.