Because Paleozoic era rock is much older than Mesozoic era rock, these strata are generally at greater depth than Mesozoic rock, thus limiting their accessibility to areas that have been exposed by weathering and erosion. More.
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.