Ancient DNA suggests that during the Bronze Age, wealthy families once lived with poorer individuals, suggesting live-in slavery could be 1300 years older than we thought
Source:
https://www.newscientist.com/article/2219542-wealthy-families-in-prehistoric-europe-may-have-had-live-in-slaves/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home