Freedom of Religion/History/Country sources/France
What is the oldest written source in this country that mentions this right?
France
The earliest documentation of freedom of religion in France is the Declaration of the Rights of Man and of the Citizen in 1798 (Britannica, "Declaration of the Rights of Man and of the Citizen," Article 10). The Law of Secularism, passed in 1905, establishes the separation of church and state, but favors traditionally "French" religions such as Catholicism, at the expense of others, like Islam (U.S. Department of State, "FRANCE 2018 INTERNATIONAL RELIGIOUS FREEDOM REPORT").