What is a Parapet?
A parapet is that part of an exterior wall which continues above the roof line for a few feet, as a barrier around the roof. You see them on castles and mission style architecture. You can find more information here: absoluteastronomy.com/topics/Parapet.
A parapet is a wall-like barrier at the edge of a roof, terrace, balcony, or other structure. Where extending above a roof, it may simply be the portion of an exterior wall that continues above the line of the roof surface, or may be a continuation of a vertical feature beneath the roof such as a fire wall or party wall.1 Parapets were originally used to defend buildings from military attack, but today they are primarily used to prevent the spread of fires.
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.