Describe AND explain why the answer to what M stands for was the first cause.

Militarism- Countries like the German Empire are heavily influenced by the military
Alliances- meant that Europe could be plunged into war if alliances were to be dragged into a war
Imperialism- Countries may have colonial conflicts abroad, such as in Africa or Asia.
Nationalism- People not only believed their nation was better, but they were prepared to go to war to prove that they were a superior nation.