There are still a lot of questions on what causes Parkinson disease. There have been studies that show it may be hereditary. This disease is caused by damage to certain brain cells that produce dopamine.
You can find more information here: webmd.com/parkinsons-disease/parkinsons-....
Parkinson Disease is caused by the degeneration of brain cells that produce dopamine thereby resulting in the loss of dopamine, a brain signaling chemical or neurotransmitter. This nerve degeneration takes place in the region of the brain that controls body movements.
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.