In this episode Zeinab Badawi starts with a visit to some of the most sensational historic sites in Africa: the Swahili coastal settlements of Kenya, Tanzania and Mozambique on Africa’s Indian Ocean coast. Zeinab then relates the tragic history of how the arrival of the Arabs in this part of Africa marked the start of an international trade in many millions of enslaved Africans. The Arabs and their Swahili partners were the first outsiders to trade in humans on the continent from as early as the 7th century. She highlights how this trade differed from the much later trans-Atlantic slave trade, and how some Africans today view this painful period in their history.