Dunno why you're getting downvoted. Europe has definitely done a lot of horrible things around the world. Britain for example banned/killed of the textile industry in India (which at one time was 25% of the worlds production) to monopolize that industry at home (which is also why they imported cotton from the America's). Let's also not forget that the Confederates were white, European, colonial Settlers. It's not just cotton buying, but the whole system / Trade Triangle around Slavery that was created by Europeans and that lead to those crimes

I mean we still buy phones, cars, clothes, chocolate, jewels made by slave labor