1905 French law on the Separation of the Churches and the State
The 1905 French law on the Separation of the Churches and State (French: Loi du 9 décembre 1905 concernant la séparation des Églises et de l'État) was passed by the Chamber of Deputies on 3 July 1905. Enacted during the Third Republic, it established state secularism in France.
Source: Wikipedia — 1905 French law on the Separation of the Churches and the State (CC BY-SA 4.0)