Black Plague
Correct!
There was a lack of peasant workers, so many mines and farms did not function as well for a time. There was such little mining that levels of lead in the air reached almost zero for the first time in thousands of years. Also, many of the lands which were farmlands became wooded areas because they were left unattended.
There was a lack of peasant workers, so many mines and farms did not function as well for a time. There was such little mining that levels of lead in the air reached almost zero for the first time in thousands of years. Also, many of the lands which were farmlands became wooded areas because they were left unattended.