I'm going to say C since I looked up the question, but warning you , I may be wrong
Because of the weakness of non-states (ones that werent official, just groups of people who called themselves states), and European powers had strong econimies and a well organized government. Hope this was useful :P
I believe it’s the last 2 options , hope that helps
<span>Sinking of the Lusitania
May 7, 1915
American gov said stop unrestricted warfare
germans said okay</span>
To obtain money, the Han emperors created a monopoly on iron and salt.
