Christmas was fixed some time in the 3rd or 4th century easter is based on the phases of the moon as a general rule, Easter falls on the first Sunday, following the first full moon after 21 March.
It was set at the Council of Nicaea,in 325.
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.