selokichtliHow did your country vote?
You only posted half of the title.
Declaration of the Trafficking of Enslaved Africans and Racialized Chattel Enslavement of Africans as the Gravest Crime against Humanity
The abstaining countries mostly has a Problem with “the gravest crime against humanity”, because there should be no ranking in crimes against humanity.
Where do you place the Holocaust, the holodomor, the crusades? The conquest of the americas?
How about this one? https://en.wikipedia.org/wiki/Great_Chinese_Famine
Your dad was probably alive when it happened
If it’s about duration https://en.wikipedia.org/wiki/Trans-Saharan_trade lasted longer and it had more victims.