Western Europe 1450-1750 the Roman Catholic church would no longer maintain its unity as a result of the Protestant Reformation ( new sects like Anclicanism,Lutheranism and Calvinism), Wars over religion (30yrs war) would see 1/3 of the population decimated, however reforms of the Catholic church (counter reformation)
A man who leads religious services is sometimes called a clergyman and a woman who leads religious services is sometimes called a clergywoman.
so the world can be a better place, it's different now
Ok i just looked it up and it's called a revolution or you can say Coup d'etat