You can format it in FAT 32 so that it can be read and written to by a PC or a MAC. Normally, the external hard disk comes with FAT 32 on it, so that it can be read and written to by a Macintosh. If you format it in HFS+, a PC will not be able to read the hard disk, only your MAC will be able to read it.
If you format it in NTFS, the MAC will be able to read it, but not write to it, while the PC will be able to read and write to it.
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.