From a FAQ on GameFAQs: "Tails has some news for you. "Professor Pickle may have found a new destination for you by now. Sonic, let's go visit him at his laboratory in Spagonia.
But first, let's enter the Gaia Gate and check out one of the doors. After all, you should have up to 38 Sun Medals and 25 Moon Medals by now. " After that, it looks like you go to Chun-nan Temple.
Open the second door to the right.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.