GPAP use Spearman rank correlation coeffient. Spearman rank correlation coefficient is non-parametric and distribution free method. It is used when the distribution of data make the Pearson method misleading.
The Pearson method is the default and the only method for calculating correlation coefficients in Excel. More.
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.