Slavery

What group or "race" of people have historically submitted to it?

anyone who got raped by mongols

There is only one race. The human race.

Safe to say, every ethnic group has experienced a slavery episode.

...

A better question would be:
What groups of people have never held or been held as slaves?

Every ethnic group has been the victim of slavery

Is it Nigger Saturday or something? I didnt get the memo.

>the white race invented the white race to make a race of people that live only to enslave other races.

everyone except

>Celtic tribes of Europe are recorded by various Roman sources as owning slaves.

>According to Calgacus's speech to his troops fighting the Roman Empire in 85 AD, as recorded by Tacitus, his speech said that the British Isles did not have slavery.

celtic brits are probably the only human group that has never been submitted to slavery