The floppy disk was invented by IBM which was an 8 inch disk at that time. This size disk was followed by a 5 1/4 and then 3 1/2 inch. Floppy disks have recently been replaced by CD's, external drives and thumb drives.
You can find more information here: en.wikipedia.org/wiki/Floppy_disk.
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.