Chelsea if you read Church history you would find hundreds of examples of Catholicism being imposed on other religions by Monarchs and vice versa.
Queen Isabella of Castile, King Ferdinand of Aragon, the monarchies of Portugal, the Holy Roman States, Russia.St Bartholemews Day Massacre in France against the Hugenuots, the conversion of Moslems and Orthodox in the Balkans in 1940, 1994 and today the forcible conversion of Christians to Moslems in Afghanistan, Pakistan and Western Africa by the Taliban, when and where they are in control.
In the Medievil Church the Jews were given 3 choices throughout Chrismdom all were Monarchies, convert, stay and face crippling fines or die a heretic death (that being burnt alive). You cant swing a chasible in history without hitting forced conversion, pograms or massacres in the name of the church by those doing Gods work.
I see what you've written, but I don't believe it conforms to reality in regard to the actions of Catholic Monarchs. If you can provide credible evidence backing your claim, however, I'm all ears (so to speak).