(A) Alliances felt obligated the nations to fight once a conflict had begun.
(B) Militarism was the spark that started the war
(C) ** The rise of armies and navies created the ability for the nations to go to war.
(D) Scramble for Africa created conflict that brought the war back to Europe.
EXPLANATIONS BELOW
Concept note-1: -Militarism denoted a rise in military expenditure, an increase in military and naval forces, more influence of the military men upon the policies of the civilian government, and a preference for force as a solution to problems. Militarism was one of the main causes of the First World War.