Respuesta :
The large number of casualties in the Civil War can be attributed to many different factions, hence the option D is true.
Civil War
It is also known as Biafran war which strated in 1967, and ended in 1970, resulted in the killing innocent people. The reason for the Civil war was the demanded by the Biafran community to get independence from the given country.
The conflict was not only between Government and the Biafran, but also between numerous factions which supported one another for ethnic, economic and religious reasons.
Hence, the option D which says "many different factions at war with one another" is correct.
Learn more about Biafran war here:
https://brainly.com/question/1343454