Q1 / answer is Bark
Q2 / answer is currency
Answer:
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
Drug treatment/therepy is the correct answer
With checks and balances, each of the three branches of government can limit the powers of the others
This way no ones branch has more power than the other and are balanced