Picasso was working on cubism in 1906, in 1907 he met up with Braque and persuaded him to move from fauvism to cubism, these two can be seen as the prime innovators, but you're asking for the father. In much the same way that Turner can be seen as the father of impressionism, we can look at, Matisse, Cezanne, and Gauguin as the fathers of cubism for the way they broke up the picture surface, especially, Cezanne, with that late 19c painting of the quarry, can't remember its title, that picture is probably the precursor, along with the studies of African art by Picasso, et al, at the end of the 19c.
From what I know, George Braque was actually the father of cubism, but Picasso gets the credit. After all...
I cast my vote for Braque however Picasso was involved as well. Maybe stepfather.
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.