The Trans-Saharan Slave Trade by Arabs/Islam and slave trading African kingdoms

Very recommendable! It also mentions the castration of male slaves and their high casualties due to the castration. Many slave women served as concubines.

Africans were substantially involved in the slave trade capturing and trading other Africans as slaves!

The warrior Malik Ambar who defeated the mighty Mughals in India in the 16th century, a former African slave

Very recommendable! Slave trade across the Indian Ocean! I don't think I ever heard about this story before.

Coast and Conquest - History Of Africa with Zeinab Badawi [Episode 12]

Very recommendable! Lot's about the Arab slave trade across the Indian ocean along the east African coast. And African collaborators in the slave trade!