But calling the Treaty of Versailles’ economic impact minimal is a great understatement. The burdensome capitalism-based war reparations and Germany’s reliance on foreign loans created cycles of hyperinflation, unemployment, and economic instability,

This literally isn't true though. Weimar Germany only experienced hyperinflation once, under the circumstances outlined previously, and they were quite economically strong before the Great Depression, which affected all developed nations of the world. The economic impact of the Treaty of Versailles was minimal, regardless of what role you think capitalism played in Nazi Germany's rise.

As far as slaves, yes that’s true, it did exist before. But Capitalism definitely continued to drive it longer than when it would have come to a natural end

... what do you think ended chattel slavery in the developed world?

I promise you, the ruling class of Britain in the early 1800s was not even close to socialist.

Capitalism is not good. Capitalism is not ideologically opposed to slavery. And capitalism absolutely can cannibalize itself and return to a more feudal mode of existence. But the mechanisms of capitalism mean that, in a closed system, chattel slavery and capitalism remain at odds. Chattel slaves cannot provide a strong consumer base or fluid labor force.