Which of the following events caused britain to fight in ww1

Does anyone know the answers to k12 1.18 unit test: the power of poetry (need answers asap)all the questions are here:

Of the three selections you read in this lesson, discuss the one story or poem that you think most closely represents the transcendentalist way of thinking. include textual evidence from both short story or poem and emerson or thoreau's essay that you use as an example. you should have no less than eight to ten sentences.

Can you describe the word chalk without saying the words chalk or chalky? (type your own definition of the word.)