Swedish slave trade
The Swedish slave trade mainly occurred in the early history of Sweden when the trade of thralls (Old Norse: þræll) was one of the pillars of the Norse economy from the 9th to the 11th century, and ended with the widespread adoption of Christianity in Sweden. Slavery was a deeply entrenched institution in Viking society which was hierarchical, and the lowest social class consisted of thralls and slaves, which made up the main source of hard labor in Norse society.