What happens after Nigeria gains independence? A) A dictator seized control of the government
B) A civil war broke out between religious groups
C) A civil war broke out between ethnic groups
D) Elections were held and a president was peacefully elected

C or B

Explanation:

Nigeria first became a republic in 1963, but succumbed to military rule three years later, after a bloody coup d'état. A separatist movement later formed the Republic of Biafra in 1967, leading to the three-year Nigerian Civil War. Nigeria became a republic once again after a new constitution was written in 1979.

i think its toxic gasses but i could be wrong

answer is b shrapnel injuries