I would have guessed 3 minutes, but some people say longer. Everyone says less than 10 minutes (except people who train for underwater diving). Apparently some people will pass out after 30 seconds, and others can stay conscious longer.
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.