Are you just being crass, or was this written for dramatic effect? That said, may I suggest you begin your studies with a nice history of the Saints, including the Religious movements of the middle ages going all the way back to the 2nd century AD. Are you really this ignorant of history? The Edict of Milan, 313 AD, declared religious toleration in the Roman Empire. I would venture to guess that the answer depends on a more specific question. Are you asking about a nation-state, or about a region or province? Is this law protecting non-Christians about Muslims, Gypsies, and historic pagans, or are you suggesting laws discussing the split between Eastern and Western Churches? Your woeful ignorance on this subject is duly noted. Perhaps after you take a class or two on spirituality in the middle ages, you can re-approach this subject with some semblance of knowledge.