If the crab is in a tank of water, the crab will be able to eat tiny mircoscopic organisms found in the water until you are able to feed her. You shouldn't rely entirely on this however, since they need a variety in their diet. :).
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.