The assassination of Franz Ferdinand is what started WW1, which was done by Serbian rebels, but the county was Austria-Hungary. The two nations that escalated the conflict was Russia, who supported Serbia, and Germany, who supported Austria.
It would be the second one and are you with the k12 progam?
A. it took a few decades. The court ruled that even if they are separate, as long as they are equal, it was okay.
B. Americas Declaration of Independence.