The first atomic bomb was a test explosion, July 16, 1945. There were none before that date, prehistoric or historic.
No, there were Supervolcanoes though, that created forces that where Nuclear(atomic-bomb) powered. It's how the Moon was created.
No, there was not. No one was intelligent enough to create an atomic bomb, back then. And, if they WERE intelligent enough to create an atomic bomb-----they wouldn't be stupid enough to actually use the damned thing.
No. There would be traces of radioactivity, since the elemental half-life of such a bomb's refined plutonium, or whatever, would still be present in geological samples even after tens of thousands of years.
Really that does seem pretty impossible,at least within the context of how we understand nuclear wars. I have looked and found a few sites that covers the subject. The asker might be interested in them,but it seems far fetched to me ,but who knows ?
I believe that evidence would still exist,so probably not.
No, of course not.
No
