Free church

A "free church" is a Christian denomination or independent church that is intrinsically separate from government (as opposed to a theocracy, or an "established" or state church). They operate under the guidelines of complete separation of church and state. A free church does not define government policy, and a free church does not accept church theology or policy definitions from the government. A free church also does not seek or receive government endorsements or funding to carry out its work. The term is especially relevant in countries with established state churches.

The free church model is historically what the Christian church was before the Emperor Constantine legalized Christianity (see Early Christianity) and before the later setting up of the state church of the Roman Empire.

There were many thriving Christian communities in the Far East (India and China) during medieval times, yet none of these communities ever wielded control of a state.

Groups like the Waldensians were in practice free churches. In 16th century Europe, within the radical movements such as the Anabaptists were free churches with small exceptions like the Münster Rebellion. Mennonites, the Amish, the Quakers and other churches maintain free church polities into the present date both in Europe and in North America.

Free churches also evolved in the USA supported by the official separation of church and state, while much of Europe maintains some government involvement in religion and churches via taxation to support them and by appointing ministers and bishops etc., although free churches have been founded in Europe outside of the state system

...
Wikipedia