This seems to work better from ancient times than from more recent times, as well as being more fun to read:

so:
Akhenaton does not annoy the priests of Amon enough for them to make sure Aton is an illegal god, and Aton gets accepted as the main god of Ancient Egypt

I think Cyberxkhan's rules are the best, so...

Since we already played from 200BC to 600AD on the first, mind we just stick there?

nope, not at all...

That wasnt a question...