Which was a cause of World War II?

the invasion of Austria by Italy
the establishment of German colonies in Africa
the U. S. decision to join the League of Nations
the British and French policy of appeasement

Which stanza structure does emily dickinson use in this excerpt from "hope is the thing with feathers"? hope is the thing with feathers that perches in the soul, and sings the tune without the words, and never stops at all, and sweetest in the gale is heard, and sore must be the storm that could abash the little bird that kept so many warm.