<span>The voting age was decreased from 21 to 18 because it was thought this would lead to less protesting by students. Before the age was lowered, there were young men being drafted, but they were not old enough to vote.</span>
a is the answer (at least that's what i believe)
Answer:
The spread of the bubonic plague from Central Asia into Europe decimated the populations but increased opportunities for the survivors. An enormous variety of new consumer goods, agriculture, weaponry, religion, and medical science became available in Europe.