Why was Agatha Christie's Hercule Poirot given an obituary?

Probably because he was such a famous character at the time when his death featured in one of Agatha Christie's novels. He was appeared in 33 novels and 51 short stories. (from wiki article).

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.