What happened in Africa with the Egyptian Empire actually occurred in similar fashion around the world. In some cultures the leader could communicate with the gods, in others the leader was a god. Inevitably these empires found each other, but a problem arose. All of these empires were lead by god, but which one of them was the real god? They clashed against one another with thunderous rage, the earth shook beneath them as they exchanged blows in a bid to prove themselves the one true god.
Over time their ideas about the world evolved, but animosity over their past atrocities continued to grow. To this day none of them have ever won that war and I suspect none of them ever will. The truth is they are all wrong, none of them were god. For their arrogance in claiming a throne that did not belong to them they were cast into their own world.
Try as they might, fast as they might run they cannot escape their past. The past returns and with it a simple truth... Their entire world was based upon a pack of lies all along.