Heroin comes in two forms, powder and tar, and they booth look different. Powder is usually a beige color. Tar heroin looks like a deep brown molasses.
You can find more information here: justice.gov/dea/images_heroin.html.
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.