The body of Jammer will become hot after working for some hours. Does the long-term working of the jammers damage the jammer itself?

No the jammers can be kept on for 24 hours a day and for 365 days a year. 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.