India was united under the Maurya Empire as early as the third century BC, although I don't think said empire survived long past the reign of Ashoka. It's been unified again under various empires several times since then, although to my knowledge none of those were viewed as incarnations of the...
I like to imagine that had Tolkien fallen down a well on his way to write LotR then we might have a more diverse and imaginative fantasy landscape today -- one less dominated by the works of a single man and the endless horde of lesser writers lining up to fondle him. I'm hardly an expert on the...
Interesting question. I'd say chocolate bars and cigars would be very butterfly-resistant. Like oshron said, people are going to want easy ways to consume tobacco and chocolate once they find out about them.
Rock music seems fragile to me, given its origins as a confluence of several specific...
I'm sceptical about the ability of the Aztec Empire to survive in the long term even without European intervention. It'd existed for less than a century by the time Cortes showed up, and its government wasn't exactly a model of stability. They didn't even bother to rule most of the places they...