Intra species communication is a function of nature as its foundation is the capability to form sounds at various levels and pitches,and assign meaning. Nurture comes in to play with Language, which some studies have shown actually begin in the womb. What makes humans special I think, is our regional variances within the species,the size of our vocabularies, and our ability to self learn (within the species not necessarily as individuals) the multiple variations.
Why Shakeaspeare says " As Sweet " ... because the master of English angauage, does not have the Mot juste for Sweet ...
Thus, only a Part of Human Experiential can be "contained" by the words of a language ... These words are like beacons, marking our Felt Understanding, of Reality.
I think all animals have language, but only humans are capable of producing speech. Other animals demonstrate the ability to gesture or make sounds that have meaning to other members of the species. I believe that the anatomy (larynx positioning) and genes (FOXP2 gene discovery, for instance) of humans enable them to produce speech.
Environment is very important because children that have been neglected never learn language if they aren't exposed to it during the critical period. I have a degree in communication disorders and have taken several linguistics courses so this is a very interesting topic for me.
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.