Concordat in Alsace–Moselle
The Concordat in Alsace-Moselle is the part of the local law in Alsace-Moselle relating to the official status accorded to certain religions in these territories. This Concordat is a remnant of the Napoleonic Concordat of 1801.
Source: Wikipedia — Concordat in Alsace–Moselle (CC BY-SA 4.0)