They had both protested/sided against their government
Answer:
The original sin was when Adam and Eve ate the forbidden fruit of the tree of Knowledge of Good and Evil.
I am not sure exactly what you mean, but if you are talking point of view, this is first person point of view.
Germany because they were the ones who started the war by invading Poland with an army and the Japanese when they bombed Pearl Harbor the knew it would start a war and they were prepared for it