You must be a blood of a god to enter the gates. If you are mortal, then you must pray to them, worship them. That is what mortals did when they were on earth so they could be sent up to mount...
Because in that time it was all they believed, so it was not "mythology". Also, the city-states of Greece were so separated they reffered to themselves as "Spartans" or "Minoans" not "Greeks". Im not...
The tales say that over millenniums of time rocks, planets, etc. crashed together creating the greek titaness Gaea. The dust shot up into the air making a male named Uranus. They populated children...
Greek mythology actually was a relegion in ancient times, it was not called mythology though. It was created by the greeks to explain natural occurances or things that they could not otherwise...