Before revision: In broad terms, the southeast was occupied mainly by Igbo, the Niger Delta by Edo and Igbo related people, the southwest by Yoruba and related people and the north by Hausa and Fulani people, with a complex intermingling of different ethnic groups in the Middle Belt between north and south .
After revision: In broad terms, the Southeast was occupied mainly by Igbo, the Niger Delta by Edo and Igbo related people, the Southwest by Yoruba and related people and the north by Hausa and Fulani people, with a complex intermingling of different ethnic groups in the Middle-Belt between North and South .