You do not have to select a best answer. Ever. The question will remain open until you close it by selecting a best answer... however we also have a voting system and if any other Mahalo user votes an answer up so it has more votes than any other that answer will automatically become the best answer.
If all answers are tied in voting the question remains open until the tie is broken. A question with only one answer and no votes will remain open forever but if someone adds even one vote it will close the question as there will be no other answers to bring up a tie. You should feel free to add comments below substandard answers to try and squeeze out a more detailed, more accurate, more information, more whatever is missing from the user who has given an answer but it just is not enough.
Please remember it might be Mahalo adding the tip but it is 100% your question so if you do not want to let any of the answers become best feel free to do what you want to so you can either get better answers or keep the question open by inducing a tie among answers. Good luck and have fun :).
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.