The causes of world war i were: militarism, alliances, imperialism, and nationalism. which one of these was the biggest contributor to the start of the war? answer in 3-4 sentences, and explain.

Here were four main causes of World War I: militarism, alliances, imperialism and nationalism. The first world war was a direct result of these four main causes, but it was triggered by the assassination of the Austrian archduke Franz Ferdinand and his wife.

You could solve them by trying something new that everyone can agree on or make a decision too.