While the Brits outlawed slavery around 1830s for themselves, they had no problem loading slaves onto their ships and smuggling them to the Americas for a good while after. Plus they openly supported the Confederacy throughout the Civil War to keep the cotton rolling in. And of course we don't need to mention colonialism that lasted until after WW2 now, do we? Of course the French, Dutch, Spanish, and Germans also colonized every inch of some else's dirt to exploit them back to the Stone Age. And there was little hesitation to kill any and all that objected the "civilizing" effect of European influence.

And slavery is ongoing even as we speak in certain parts of this world. But we do nothing and care little about that. As long as they keep it on the down low we need not be overly concerned.

England started ending slavery before the revolutionary war.

That's a major reason why the founding enslavers of USA concocted their own regime, but that reality has been mostly obscured.

Still in the Americas, I suppose?