Within 48 hours of conception. The egg only lives for that long.
For you to conceive you have to be ovulating... so the day you conceived is the day you were ovulating... and the egg only lives 24 hours, not 48! But the sperm can live up to 72 hours in the female's womb... you can google it if you want...
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.