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 ethnic groups and multiple major religious groups (predominantly Muslim and Christian). Historical and ongoing tensions between these groups, including competition for resources, political power, and cultural differences, have been a persistent and major driver of unrest in the country. While other factors have played roles, ethnic and religious divisions are a core, long-standing contributor.

Answer:

its many ethnicities and religions