Answer:
because it was literally greater than any waged before: over 59 million troops were mobilized , over 8 million died and over 29 million were injured in a struggle which sharply altered the political, economic, social and cultural nature of Europe.
Explanation:
Running is being used as a gerund working as a noun
It is something that drives conflict I believe
Answer deleted since it is related to another question. Please disregard..........................................................................................................................................................................................................................................
