What has been an overwhelming problem common to nigeria and Bosnia?

Both Nigeria and Bosnia have experienced devastating civil wars that have resulted in widespread destruction, loss of lives, and political instability. The Nigerian Civil War, also known as the Biafran War, lasted from 1967 to 1970 and was fought between the federal government of Nigeria and the secessionist state of Biafra. The war resulted in the deaths of millions of people, mostly due to starvation and disease. The Bosnian War, which occurred between 1992 and 1995, was a conflict between the Bosnian Serbs, Bosnian Croats, and Bosnian Muslims. The war resulted in the deaths of over 100,000 people and the displacement of millions more.