1. Which of the following has the best explanation of the causes of World War I?
a. The only cause of the war was the assassination of the Archduke Franz Ferdinand.
b.The only causes of the war were militarism and imperialism.
c. There are the main causes of militarism, alliances, imperialism, and alliances. Then, the spark of the war was caused by the Assassination of Archduke Franz Ferdinand.
d. The only causes of the war were nationalism and alliances.