North Africans were enslaving White Christians long before the African slave trade started...

... up to 1.25 million Italians, Spanish, Portuguese, French, British, Icelanders were kidnapped by the Corsairs of North Africa and sold in Africa...

https://news.osu.edu/when-euro....peans-were-slaves--r

Research Suggests White Slavery Was Much More Common
news.osu.edu

Research Suggests White Slavery Was Much More Common

  Editor's note (3/21/20): For an update on this story, visit: Why is a 16-year-old book on slavery so popular now?   A new study suggests that a million or more European Christians were enslaved by Muslims in North Africa b