What is the sentence if I may ask ?
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:
d.
a compound sentence is when the sentence can be split up to make two complete sentences.
i.e. Paolo missed his girlfriend. He knew she'd be back.
d. can be split up into two fully functional sentences.
A compound
hopefully that helped ;)<span />