How did the militarism contribute to the start of World War I? a)The new manufacturing capacity of European nations led to massive military buildups.
b)Militarism was avoided by most European nations, enabling one nation to exceed the competition.
c)The military build ups brought stability to Western Europe cause the US to attack them first.

a)The new manufacturing capacity of European nations led to massive military buildups.

Explanation:

B doesn't make sense becuase there wass build up and the war was only so bad because the two sides were prettty evenly matched.

C does'nt make sense becuase the US didn't attack and start WW1 the asisnation of archduke ferdand and subsiquent Prussian invasion

Thus A is the only one that makes sense

the correct answer is d