The Confederacy’s main goal was to keep the right to own slaves (Ofc now racist MAGAts will claim it was about “sTaTEs RiGhTs”) because slave labor was (and still is, unfortunately) the cheapest labor around and having a drive to get the cheapest most exploited labor you can is what happens with capitalism.

This may come as a shock, but slave labor predates capitalism, and the capitalist development of the Northern states quite explicitly undermined the viability of slave labor (hence the rebellion).

Nazi Germany’s rise was fueled by widespread misery and discontent among the German populace because of Capitalism-based ‘war reparations’ like the burdensome payments mandated by the Treaty of Versailles, which crippled the economy and fueled resentment that the Nazis could exploit.

No. This is a common misconception - the economic effects of the Treaty of Versailles were minimal on Germany, with even the famed short period of hyperinflation coming from an attempt by the German government to wiggle out of paying in a legalistic sense (it, obviously, did not work). The Nazis rose because they exploited the sense of nationalist grievance which the monarchist right had cultivated in response to losing WW1 and losing their precious monarchy with it. The German economy was not in particularly dire straits compared to other European nations of the time - but only Germany was nursing wounded pride over their 'glorious' empire being cut to ribbons.

Had it not been for capitalism, there might have been little desire to ruthlessly pursue monetary compensation like that and WWII might not have ever happened.

... capitalism is certainly not the cause for the Entente demanding war reparations, man.