As Georgios points out, energy is what we animate, or what animates us. Much energy is needed to carry on developing, but because monetised energy availability peaked around the seventies with peak ease of extraction, now we are going backwards in general, despite information and computer tech developments, and even solar developments. Its worth noticing slavery is connected with mode of energy acquisition. Slavery requires the slaver to be in control of the energy supply of the enslaved. So the energy has to be in scarcifiable form, not generally available in the environment. Farming is a way of doing this, scarcifying naturally available food resources, concentrating those into food available for those participating in the slavery, both as slavers and enslaved.

If there had been ancient solar powered society, this could have existed without slavery, but would have been extremely vulnerable to adjacent "Civilisation" practicing slavery, as we should learn from Gaza.

Again its really interesting, the history of seven years of grain hoarding, apparently instructed by a deity, followed by seven years of famine, the deity even predicting this is what would happen.

There is no proof either way that slavery existed before this.

Can't say that the pyramids are proof, because a truly solar powered society would have had technologies that we literally can't perceive in non-solar powered society, given in the case of limitless energy available to all, all geniuses and all ideas of such can be, and would have been funded, and there would not have been widespread genocide, culling geniuses and all human possibility.

The refusal of monetisation authorities, right now, to monetise historically created economic product from solar, locking us into energy extraction, is right now our biggest threat to finally getting rid of slavery, thus releasing the planet from our destructive mode of extracting all energy.

Its an existential threat. THE existental threat, it has to be said.