You should not tell them and it is illegal for them to ask. It is also illegal to fire someone over it or not hire someone for being pregnant. Just don't tell them about your personal life at all, it is none of their business and they would be unethical to ask anything personal.
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.