Reality

If you stop calling something by the title you’ve used to call it, is it still that thing? 

If we stop calling Ancient Rome as Ancient Rome, rewrote all the history books calling it Ancient Rome, and again forced anyone who called it Ancient Rome to be silent. Would that period in question still be Ancient Rome? 

Well, let's consider this on a basic level. If my cat Fluffy suddenly decides she no longer identifies with her title as a "cat" and prefers to go by the noble title of "Dragon," does she suddenly gain the ability to breathe fire? I don't think my local fire department would appreciate the results...

Similarly, if we rewrite all the history books and staunchly refuse to acknowledge Ancient Rome as Ancient Rome, does it stop being Ancient Rome? Well, the buildings aren't going to suddenly stand up and say, "Alright folks, we've had a good run, but guess it's time to pack up and become Modern Day Des Moines." In reality, no matter what we call it, Ancient Rome would still be Ancient Rome. It's like are old say, "A rose by any other name would smell as sweet." And on that analogy, I'd rather not sniff Ancient Rome, regardless of what we call it. I've heard ancient sanitation wasn't the best.