What did people believe the black death was retribution for?

As they did not understand the biology of the disease, many people believe that the black death was a kind of divine punishment retribution for sins against god such as greed, blasphemy, heresy, fornication and worldliness. By this logic, the only way to overcome the plague was to win God‘s forgiveness.

It was a form of anthrax i hope this helped by the way

The correct answer would be : a system of classes that were organized like a pyramidi hope that this you !