biafares people are from guinea or Guinea Bissau.
the igbo language are the mixed spoken in Guinea from thier language fulu, malinke, susu, kpelle . they travel from land to land becoz of the war in Guinea a war fight to Portuguese . they cannot handle the fight and they lost it until now Guinea people are speaking Portuguese languages . along the way of thier running from thier country . they found the indigenous place of nigeria and found a natural resources , they fought for the land. but it was a part of landmark of Nigeria. along the war in guinea and poor life they have to fight for the land where they feet stand were its property of nigeria landmark. because of the resources and aiming a good life and future for thier people and when they lost the fight they used their hand to give authority to rule biafares people under nigeria country. so people u cannot own the landmark of nigeria and their resources .

Visit here for confirmation

https://www.nairaland.com/2719076/old-maps-show-biafra-actually