During the Medieval times, living conditions were very poor, there were many rats and fleas, and hygiene wasn't looked after. Tragically, as researchers eventually learned, the Black Death was a disease that was spread through the air. Travel and trade inside Europe have grown significantly since the Crusades. People travelled over highways, rivers, and between nations on boats, so those who attempted to escape the Black Death's devastation may have unintentionally brought it with them to new places.
The Black Death had a wide range of negative repercussions. Trade suffered for a while, and conflicts were put on hold for a while. Many workers perished, which caused personal pain and financial hardship for families; it also had an impact on landowners who employed workers as tenant farmers. The landlords who were able to retain their tenants because of the labour scarcity did so by paying wages or money rents instead of labour services, which was advantageous for the tenants who were still alive. Additionally, the pay for artists and other workers were boosted.