What two things does john green blame the start of ww1 on ?

The collapse of the roman empire most likely to empower the catholic church because

The national union of women’s suffrage societies (nuwss) and the women’s social and political union (wspu) most differed in which way?

What should the christian's stand be concerning military involvement? is there ever justification for war? can a war ever be "just"? write your answer in a paragraph of 125 words.