Question

What was the worst pandemic that ever existed and what was it cause.

Answer 1

Answer:

The plague probably

Explanation:

Caused by sewer rats, it wiped out like half of Europe

Answer 2

Answer:

Black death could be one.

Explanation:

Black death is the result of plague.The Black Death, also known as the Pestilence and the Plague, was the most fatal pandemic recorded in human history, resulting in the deaths of up to 75–200 million people in Eurasia and North Africa, peaking in Europe from 1347 to 1351.