If you don't buy the male mice at the same time while their in the same cage they would fight bitterly but 2 females might not have a problem with each other but the safest way to get 2 mice at a time is from the same cage.
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.