Because the dropbox files are stored locally on each computer you should be able to store the parallels files in the dropbox folder and launch them from multiple machines. The changes to the files will be synced over the web. You will not be able to run parallels on a computer that isn't synced unless you download all the parallel files locally.
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.