But you can't tell me everyone mistreated their labourers.
By virtue of being enslaved, they were mistreated.
Yeah okay.
In some shithole backwards cannibalistic society they had freedom to get eaten. Or dying of the flu still stuck in the stone age.
In America they were eventually allowed to integrate into society fully and become regular citizens. The first few generations suffered but their descendants have it way, way better today.
People becoming indentured servants in America had a very similar experience.
