The difference in gold coins are recognizable, and convenient and is a rectangle shape, there are gold plated gold and is very expensive. Siver coins were used as money, silver dollar,100 oz investment bars and has it purity stamp.
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.