There are many different kinds of arborvitae (i.e. , that is the correct Latin word which literally means "living tree"), so there is no simple answer. However, the web is rife with suggestions, including Mahalo, so check out the links, below, or enter "pruning arborvitae" into your favorite search engine, without the double quotes.
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.