1801 The French Revolutionary Government and Pope Pius VII entered into the Concordat of 1801. While Roman Catholicism regained some powers and became recognized as "the religion of the great majority of the French", it was not afforded the latitude it had enjoyed prior to the Revolution and was not re-established as the official state religion. The Church relinquished all claims to estate seized after 1790, the clergy was state salaried and was obliged to swear allegiance to the State.