Why does earth has a leap year?

Because it takes approx 365 and a quarter days to orbit the sun. Since this is not a whole number of days, it is necessary to make the adjustment. Otherwise the seasons (which depend on our position in the orbit) would drift.

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.