many slaves in Ottoman Empire were of Slavic origin. https://en.wikipedia.org/wiki/Crimean%E2%80%93Nogai_slave_raids_in_Eastern_Europe https://en.wikipedia.org

many slaves in Ottoman Empire were of Slavic origin. https://en.wikipedia.org/wiki/Crimean%E2%80%93Nogai_slave_raids_in_Eastern_Europe https://en.wikipedia.org/wiki/Crimean%E2%80%93Nogai_slave_ra... not sure why the downvotes. I suppose some people believe that slavery existed only in USA, and consider it offensive to suggest otherwise.