For modern human civilization it seems like acquiring the kinds of power required to break out of the constraints of current technologies is impossible without conflict. This has been the case throughout history and is possibly even the reason why we have a split between history and prehistory.
The Bronze Age Collapse was a massive event that caused almost all now prehistoric civilizations to get wiped from the face of earth in an incredibly short time. We still don't know what caused this, but a large scale war or invasion from a foreign force is one of the most prevalent theories.
One of the more smiled at theories is that early humanity in the middle-east acquired a status relatively akin to that of a super-civilization and promptly self-destructed. Of course, aside from a few edge-cases of technology that's way far ahead of its time, no proof for this exists and these theories are, as mentioned, generally laughed at.
However, the naysayers always seem to ignore one core point. Obviously this is due to the fact that it's quite unscientific, but what if these early human societies, through their hundreds, if not thousands of years of continued existence acquired the status of a spiritual super-civilization, instead of a technological one? Obviously, it can be argued that this simply doesn't apply to our reality due to the lack of scientific proof for anything such as spirutal powers, but yet it's an exciting thing to hypothesize about. So, let's make ourselves a copy of history. This time around let us make sure that our prehistoric civilizations have gained access to spiritual powers of deities.
In our version of history the Fertile Crescent had already survived many calamities. The joint force of a humanity united, wielding powers of the Gods defied all odds and with no inner conflict humanity kept expanding in everlasting peace, for centuries past the point of collapse in our reality. What we know today as the Rosetta Stone was created not to create understanding between opposing nations, but so that all humans speaking the universal language, no matter where from, could read the texts of other empires with ease.
Gods often bestowed the most spiritually adept warriors of an army with a weapon known as an Artifact, truly legendary weapons, often those of the gods themselves. Able to output immeasurable amounts of power, these often turned the tides of entire wars back and forth multiple times over the time of even a single skirmish. However, in the absence of a need for conflict, wars were held not as contests of power, but as games. While functionally identical with our understanding of a war, there was no hostility between empires at war. Even with hundreds or thousands of casualties, these were a mere friendly comparison of spiritual powers between empires, and the fallen warriors would regularly go down in legend.
These times of prosper however would soon come to an end.
Humanity had become comfortable with its' immense powers and would soon start getting greedy for more.
After all this work of setting up super-civilizations in our version of prehistory, the Bronze Age Collapse was not as avoidable as we thought it was.