When did crop dusting begin?

(From Wikipedia) The first known use of a heavier-than-air machine occurred on 3 August 1921 when a Curtis JN4 Jenny piloted by John MacReady was used to spread lead arsenate to kill catalpa sphinx caterpillars near Troy, Ohio in the United States.

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.