It is a matter of the quantities still existing Threatened" is a blanket category, containing the classifications "Vulnerable", "Endangered", and "Critically Endangered". These assessments are based on calculated probabilities of extinction. The full list for assessment is too long to list here, but can be found at redlist.org/info/categories_criteria2001... just keep scrolling down the page to Section V Threatened means the species' habitat is decreasing - endangered means the species is almost completely gone and unless drastic measures are taken now - they will be extinct (no more).
A threatend species is about to become endangered. There is more of the species if it is threatend. Endangered is at risk of being extinct.
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.