An average is simply the values (-10, 8, -4, 2, 7, -5, -12) added together/ divided the number of values So (-10+8-4+2+7-5-12)/7 == will yield your answer. Think about an exam where you received a 50% and an exam where you received an 80%: both are worth 100 points. You class grade at that point is 1.3/2 is your percantag (or average).
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.