I agree that this is true (from my viewpoint that’s assuming, of course, that God wouldn’t step in and give someone a vision so as to give the Faith a new jumpstart), but the same would be true of most secular history. We only believe in our history, for the most part, because our ancestors took care to spread the word to future generations (through records, etc.), and subsequent generations have cooperated and continue to cooperate in preserving and propogating these things (by adhering to those records and not dismissing them). If we halted this “spreading of the word” in every way, shape or form, we would become a people with little to no awareness of history–literally having to just make up theories as to why certain monuments and countries existed, etc. Archeological evidence only speaks for itself to a certain point, beyond which we could only theorize and assume, which wouldn’t lead us to even remotely the historical awareness we currently have. Likewise, if school systems suddenly started universally teaching an alternate history and we stood by and allowed it, within a few generations the alternate history would be taken as the truth by the overwhelming majority. The point is that of course this has nothing to do with whether or not historical events really happened, just as it has nothing to do with whether or not any give religion is true: It just has something to do with people believing a certain thing, whether it’s absolutely true, partly true, or not true at all.