The war crimes trials that followed World War II were historically significant because for the first time: a) nations were asked to pay for war damages b) individuals were given immunity from prosecution c) nations on both sides were found guilty of causing war d) individuals were held accountable for their actions during wartime

Let's look at all the options:

a) nations were asked to pay for war damages

-this is not true as it already happened after WW1

b) individuals were given immunity from prosecution

This is also not true - they were not given immunity

c) nations on both sides were found guilty of causing war

This is not true! The Axis powers were found guilty

d) individuals were held accountable for their actions during wartime

-This is the correct answer! people were judged for causing the Holocaust.