Any educated person know that slavery has been practiced for thousands of year. America was formed on thecae of liberty for all but it clung to slavery because it was the only way a rural agrarian society could function with big plantations. The invention of the cotton gin was one of many reasons slavery continued.
Of course there is slavery today, often of women, often of the very poorest. Our "Allies" Saudis practice it.
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.