What was the Significance of the Black Plague?

The Black Death ravaged the continent for three years before it continued on into Russia, killing one-third to one-half of the entire population in ghastly fashion. The plague killed indiscriminately – young and old, rich and poor – but especially in the cities and among groups who had close contact with the sick

Explanation:

Within a matter of less than a decade, it wiped out a third of the population

Explanation:

then after that the renissance happened

the answer for 3 is b and the answer for 4 is d