Assertion: bight | /r/MadeOf | a number of ethnic groups
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text: The Bight of Biafra contained a number of ethnic groups, including the Igbo, the Ibibio, the Igala, the Efik, the Ijo, the Ogoni, and groups to become involved in the slave trade were the Aro, Of these ethnicities, around 75 percent of the captives from Biafra came from the Igbo-Ibibio area.