Did the main supporters and opponents of Social Darwinism influence American society mostly in foreign rather than domestic policy?

I believe both because in that time period the US was and still is by a thread the hegemon of the day, allowing for that ideology of social darwinism not only to influenced US culture but also that of the World.

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.