The anwser would be b because if u read the passasge u will see that the only one it sttaes is B
Answer:
it stood between the Union Army and two of its most prized targets: the Gulf of Mexico to the west and Charleston to the East. It was also a symbol of Confederate pride and strength, and its fall made even the most loyal Southerners doubt that they could win the war
The main reason that would make a country to end its participation in a war because it has become immoral is the presence of war crimes.
<h3>What are War Crimes?</h3>
This refers to the inhumane actions that a person or soldier, usually fighting in a foreign country metes out on people, such as unprovoked aggression, extra-judicial killings, genocide, etc
Hence, we can see that the presence of war crimes is the main reason why a country would pull out of a war and claims it is immoral as this would have infringed on human rights.
Read more about war crimes here:
brainly.com/question/1550237
#SPJ1