A reaction to aristocratic power
The answer is the 3 one actually
The death of archduke Francis Ferdinand of Hungary was the initial cause of ww1. However there was a build up to ww1. Countries had new powerful weapons and wanted to capitalise on this. The navy’s of many countries were being expanded. Political disagreements between countries led to increased tensions.
Answer:
Something unique about the war was that we generally did not take, occupy, and control land, our strategy was to kill the enemy