If the external hard drive is formatted for Mac with FAT32, then your computer may not recognize it since most Windows computers use NTFS file system. "The guy at the store told me it would work for both PC and Mac", but does the packaging tell you that? Since it is seen in disk management, all you'd need to do is right click on the drive and format the disk using NTSF.
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.