Strawberries and raspberries are hardy perennials even in severe climates and are very edible. Other edible perennials are potatoes and asparagus which will come up every Spring. ("Edible" is the proper spelling of something that you can eat.
"Editable" means something written that can be edited.).
Wild garlic - this appears in the spring but the leaves die down and disappear in the summer. Wild strawberries. Welsh Onions which are perennials and keep coming back.
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.