Answer:
The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke.
I am also stuck in this question but l think it could be b VII...hope l help sorry if lam wrong lol
A is 100% the correct answer
Confederation, I guess. European Union for example
