1. I have acknowleged on multiple occasions on here that slavery is an historical fact outside the US. Usually in the context of biblical slavery.Let's just ask a few questions. Have you ever heard a leftist, Democrat, woke SJW, or BLM activist say:
1. Slavery is a world-history problem that goes back as long as humans have been alive, and has manifested in all races and cultures and thus has just been another chapter in a long-standing evil institution?
2. Blacks are the ones who captured other blacks in Africa, and thus are guilty of initiating the Trans-Atlantic Slave Trade?
3. 97% of Africans were not brought to the USA?
4. Only 1% of White people owned slaves?
I've never heard any of it. Never. Not from a Democrat, not from a CRT/1619 Project guru, not from a woke SJW, not from a BLM activist...
On the contrary, we've seen the messaging from the left on the topic. White people hold an "original sin", black slavery was uniquely evil, all of white people benefitted, we need reparations from all whites. Africans were victims only (despite being the ones who enslaved one another).
2. So your assertion is, is that since it were blacks who did the capturing, whites aren't responsible. It seems to me that the blacks in Africa captured their neighbouring tribes and sold them into slavery because whites provided the economic incentive to do so.
In fact, it was a entire economic system called the triangular trade routes.
If I commission someone to steal a work of art. Would you say I'm not responsible because I didn't personally break into the Louvre.
3. You are right. On the other hand, the USA kept the instution of slavery long after most nations abandoned it. Fought a civil war to try to sustain it, and after they couldn't kept Black people as second rate citizens well into the 20th century. Something that still creates systemic problems to this day. So there's that.
4. If by "owned" you mean held the deeds as an individual sure, the number is closer to 2 but sure. On the other hand if you look at it by household like I'd suggest an intellectual honest person would look at it, the number during the colonial era was more like 25 percent. And just before the civil war in the Southern States over 30.
See the reason you don't hear the points you make among leftists, is because you aren't really interested in hearing what they have to say if it doesn't fit your narrative. On top of them being misleading, or simply bad from a rethorical standpoint.