AHC: Major denominational changes in Europe after 1700

Following the reformation, there were obviously huge movements in the denominational beliefs in Europe, with major chunks turning to Lutheranism, Anglicanism and Calvinism. Subsequently, with the counter-reformation, some nations changed back. But all this seemed to come to a very sudden end by 1700, even though the Enlightenment ploughed on.

Your challenge is to get major religious changes to Christian denominations in Europe after this date. Bonus points if it's to an OTL minor Christian sect or to a new one that could emerge.
 
Hmm. You could always go the LTTW route and have the Papacy effectively destroyed in an alt-Revolutionary war, thus creating an environment for further splits in the Catholic Church.
 
Hmm. You could always go the LTTW route and have the Papacy effectively destroyed in an alt-Revolutionary war, thus creating an environment for further splits in the Catholic Church.

Then they would split away from the Catholic Church, since the Catholic Church has a world church approach and not a national church approach, like some of the Protestant churches.
 
Then they would split away from the Catholic Church, since the Catholic Church has a world church approach and not a national church approach, like some of the Protestant churches.

Well yes, but that's kind of my point, you'd still have Catholicism as we know it (more or less) but the possibility of large scale conversions (e.g. a 'Gallic' Church) would be there.
 
Is it possible to have Ireland split from the Roman Catholic church, post-1700?

What about further Protestant denominations emerging as major powers?
 
Well, IOTL there was the 'Old Catholic' Church that split from Rome in the 19th century over the question of papal infalibility (and over some other point, too?). It still survives in a number of countries today, and is now in full communion with Anglicanism. IOTL this was never more than a relatively minor movement, but could it perhaps be made more significant?
 
Following the reformation, there were obviously huge movements in the denominational beliefs in Europe, with major chunks turning to Lutheranism, Anglicanism and Calvinism. Subsequently, with the counter-reformation, some nations changed back. But all this seemed to come to a very sudden end by 1700, even though the Enlightenment ploughed on.

Your challenge is to get major religious changes to Christian denominations in Europe after this date. Bonus points if it's to an OTL minor Christian sect or to a new one that could emerge.

The bolded part is the key. The Enlightment is the product (and also the ccause of further development) of a proccess of political and social conformation that dissociated itself from the religious identity to other forms of civic and political identity. That was being underlined in Westfalia, and even has some early though not totally succesful iteration in the principle of Cuius regio, eius religio. So, religion, lossing importance as an identity source, things like en masse conversions to other denominations and politically motivated religious striffes are not in the cards. You now can kill directly for the state with well thought justifications and without the mediation of God.
 
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