The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke.
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A. he is hanged from the very gallows he had built for Mordecai.
The Allies were concerned with the treatment of Jews in Nazi control.
Explanation:
While the war effort was not entirely because of the German policy on Jews it was a huge part of the effort and many countries had Jewish battalions that were fighting for the cause of their fellow sufferers.
The allies tried to free the Jews from the Nazis and in the end were also responsible for the formation of the new Jewish state in Israel and took up a huge population of refugees in too in their own countries.