How did nations alter their economic and social practices to finance, equip, and maintain morale for a total war ?

1- Essay Question: How did nations alter their economic and social practices to finance, equip, and maintain morale for a total war? 2- for the introduction end the first paragraph with for example: I argue that…, in this essay i aim to discuss that…., etc. 3. I would like you to refer to a book by Robert Graves called “GOOD – BYE TO ALL THAT” from chapter 10-19, you can also refer to a book by John Keegan called “THE FIRST WORLD WAR” if needed, or sources from your own. I prefer that you use 3 sources at least including the book by Robert Graves. 5- This is a feedback from my professor. placing the overall argument at the beginning rather than saving it for the conclusion would be a key element.