Okay I only know 2 things: The sinking of the Lusitania and Zimmerman Telegram. What started the war the ruler of the ottoman empire was assassinated and what expanded the war was the Zimmerman telegram.
"<span>The two generally operate separately, although federal courts may overrule state court decisions that violate the US Constitution" is by far the best option.</span>
Because history tends to repeat itself and these stories echo events in real life.