What was a major contributor to unrest in nigeria?

 The correct answer is :  its many ethnicities and religions

Explanation: The large numbers of casualties during the civil war in Nigeria were attributed to the many different factions at war with one another. When military leaders and dictators ruled Nigeria they avoided the riots by prohibiting any criticism of the government.

the arab empire adopted the muslim religion as their main belief. arabs would influence the people from the territories they invaded towards islam (the muslim belief).

nevertheless, throughout the history of the arab empire, rulers brought intellectual individuals from other religions to their centers of learning. these other foreigners included jews, christians, greeks, persians, and indians.   these resulted in the adoption of important knowledge developed by these cultures by the arabic empire. for example, the works of aristotle were translated from greek to arab and indian scientists brought the numerical concept of "zero" to the arabs.

nowadays, 93% of the arab population is muslim, which at the same time is subdivided in sects including the sunni, zaini, alawi, shia. the remaining 7% is composed mainly of christians.