Question

what was a major contributor to unrest in nigeria? its many ethnicities and religions a series of military dictatorships an economic dependence on oil clashes with other african nations

Explanation:

Nigeria has over 250 distinct ethnic groups and multiple major religious communities (predominantly Muslim and Christian). Historical tensions, competition for resources, and political marginalization along ethnic and religious lines have been persistent, root causes of widespread unrest including communal violence, insurgencies, and political instability. While other factors have played roles, ethnic and religious fragmentation is a core, long-standing contributor.

Answer:

its many ethnicities and religions