Which events sparked word war 1? Check all that apply

So when the one archduke got assassinated, that pretty much sparked the whole thing

"a shortage of traditional labor created new opportunities in the workplace. a major cause of the internment of japanese americans during world war ii was. racial prejudice. in the early 1940's, the "destroyers-for-military-bases deal" with great britain and the lend-lease act were evidence that the united states."