Algeria–Holy See relations the Holy See and allowed Roman Catholic priests to continue ministering to the remaining Catholics in Algeria. Although Islam is the state religion of Algeria, the Holy See has maintained a comparatively good relationship with the Algerian authorities, with Léon-Étienne Duval being famously recognized as the "bishop of Muslims" after the departure of French colonists. The Algerian state has sought to clearly distinguish between the Catholic religion, which is licit in Algeria with limitations to proselytism, and between Evangelical sects, which are officially forbidden and legally repressed by state powers. However, since a 2006 law limited religious worship to government-approved
Holy See weakened the authority of the Holy See throughout much of Europe. Following the French Revolution, the Papal states was briefly occupied as the "Roman Republic" in 1798–1799 as a sister republic of the First French Empire under Napoleon, before the territority was reestablished. Notwithstanding, the Holy See was represented in and identified as a "permanent subject of general customary international law vis-à-vis all states" in the Congress of Vienna in 1814-1815. The Papal States was recognised under the rule of the Papacy and largely restored to their former extent. Despite the Capture of Rome in 1870 by the Kingdom of