Earlier quoted context omitted.
Dude, only Europeans had slaves right? It is not like the entire world had them. In fact the word slave originates from Slavic people.. I don't think Asians ever had slaves in the history. The OP comment said " what are the odds that the rest of the world was wrong for a millenium and Americans figured it out in 100yrs" Edit: damn. non European had slaves. Didn't know it before. Wasn't definitely part of the history…
Is this parody/sarcasm/troll? At a minimum, Africans and Muslims had slaves. Pretty sure the Incas and Aztecs did. I lack data on Asia.
"Slavery in Korea formally existed from antiquity up to the 20th century. Slavery was very important in medieval Korea; it was a major institution. [...] The Korean "nobi" system of slavery peaked between the 15th and 17th centuries and then declined in the 18th and 19th centuries." [1]
"The Mongol Empire (1206-1368) had a tremendous impact on slavery across Eurasia. While slaves played a minor role in pre-Imperial Mongolia, the Mongols saw people as a resource, to be distributed among the imperial family and used for imperial needs, like material goods. This view created a whole spectrum of dependency running from free men to full slaves." [2]
[1] https://en.wikipedia.org/wiki/Slavery_in_Korea
[2] https://www.cambridge.org/core/books/abs/cambridge-world-his...