Cordially
Cordially
On the circumstances of history -
Any event is the result of long chains of circumstances, all of which are essentially points at which a roll of the dice, metaphorically speaking, could have shifted things to, perhaps, a very different present.
Peculiarly deadly Calvinists are one factor. However, they are not the only factor. In English political history consider the potential of a Charles II with a male heir. Or if his brother wasn’t a prat. Or a William III who lived longer with a proper heir, where Parliament did not gain power over weak women monarchs or a foreign dynasty with little local backing.
We have real life experiments (history is full of “natural experiments”). France had its peculiarly deadly Calvinists too, in the previous century. They won their own civil war, even putting one of their own, Henri IV, on the throne, which the English ones never quite managed. But the chain of circumstance went in a very different way - probably because there were pre-existing conditions in France, the result of many different chains of causation, and events moved differently after as well in other chains of causation.