Classical is a strange word to define. For the purpose of talking about Greek architecture, Classical means that it was made during the time period that is called classical antiquity. This generally includes Roman and Etruscan architecture as well.
One could say that a Greek temple was a classical building, a Gothic cathedral is a Medieval building, and the cathedral in Florence is a Renaissance building. Those labels refer mostly to the time period the building was built in. It gets tricky in architecture when we start using words like classical to talk about buildings that were built in a different time period, but look like they were built in a classical time period.
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.